where do i go from here

ive been working out over a year , gained(30lbs) alotta mass but theres alotta fat with it , my diet as of today will be in check .
 
 my problems are ,  i get weaker , it makes no sense , ill have a good day and get stoked  lifting a decently heavy weight, set a goal to increase the weight on that particular exercise within the next two weeks of doing it by like 5-10 lbs , but the next week ill be weaker and not able to lift same weight as beforeill go form getting like 7 unspotted reps the one week then like 3-4 the next , ill have to lower the weight. thinking its just a bad day ill try to go back up but it wont happen , so i bought from plain creatine mono , and ive been using it two weeks now , not sure if its loaded , the guy at the store told me not to load , just take a tea spoon in my gainer/shake after the workout once a day , itll take longer to load but i wont risk stomach problems , ive actually gotten weaker since ive started it. but that could be in my head...  my endurance sucks , i still want to bulk but dont wanna gain as much fat...
 
should i try an HST? those 3 day a week full body things? ive heard good things right and want to try it but  im the typical guy  i wanna work my chest and arms big time cuz i wanna look good and thos things only do like one exercise for it 3times a week... and nothing thats iso- for the arms , like.... doesnt seem like ill gain anything , seems like ill lose size ,  and will doing cardio help my lifting endurance?...  i wanna do cardio pretty bad but dont wanna risk losing any muscle mass until i gain another 25 lbs and start cutting....... so im peaked , im not in the shape with cardio strength or endurence that i wanna be in... ive been doing this 1.5 years..... i want more serious results... can i get some advice please

What does your routine and diet look like?

Gin Rummy: Simply because you don't have evidence that something does exist does not mean you have evidence of something that doesn't exist.(from the boondocks)

MONDAY -CHEST- *Incline bench with DBS 3 sets 6-8 reps (with 70lbs db's if spotted now using 55's cuz im only getting like 3-5 reps now with the 70s and never have a spotter plus depressed that i seem to be getting weaker ,spotter says he takes alotta weight after that 4-5 reps when using the 70's and my goal is mass gain so i know need more reps but i want strength too!)
                           *flat with BB - 3 sets 6-8 reps with a spot at 135lbs
                          *flat cable flies 3 sets of 10
 
TRICEPS                  *behind the head dumbbell extension 3sets10reps - was using 80lbs db ,     now 70lbs DB CUZ I HAVE NO SPOTTER AND SEEM TO BE GETTING ABIT WEAKER
                             * dips machine with 140lbs worth of plates on it , 3sets /10reps
                               
                          *   flat skull crushers ,  10 lbs plate on each side , 3/10
 
 
TUESDAY - abs , all over the place , just whatever is free , no set routine PRETTY much slack off although i want abs bad  i can never work em right
 
WEDNESDAY-  back- palms facing me lat pull down , then seated rows then wide grip lat pull down , all 3/10
 
                    BICEPS'  -  ez bar with 15 lbs on each side , wide grip 10 reps supsersetted with hammer twist curls 15lbs dbs .  3 sets or ten reps for each
 
                   then seated incline curls ,rest pause three sets  , then 3 sets of 21's with a bb
 
THURSDAY - legs -  3 sets 10 reps. of v-squat machine 2 -3 45lbs plates on each side depeneding on how i feel , and calf raise machine 3/10
 
 
FRIDAY-shoulders-  seated military db press. 55lbs , can get to 7 reps unspotted on the first set then like 4-5 then next two.
                                    bent over laterals
                                     behind the head bb press
                                    front raises with bb
 
sat/sun off
 
DIET - CRAP! , I HAVE 1-2 PROTEIN GAINER SHAKES A DAY , TOGETHER THEY ARE 232 GRAMS OF CARBS , 85 GRAMS OF PROTEIN  AND 1500 CALORIES.
 
 IVE BEEN TAKING CREATINE MONO FOR 2 WEEKS , 1 TEASPOON A DAY IN MY SHAKE AFTER THE WORKOUT , FEEL NO DIFFERENT , INFACT WEAKER BUT MAY BE FROM SOMETHING ELSE.
I DO USUALLY HAVE A DECENT HEALTHY LUNCH , LIKE SOUP AND A SANWHICH . BUT DRINK ALOT OF POWERADE , ICE TEA  , POP ECT. WHICH IS BAD , AND GO OUT TO EAT ALOT WHICH RESULTS IN BURGERS BUT DO HIT UP QUIZNOS AND GET A CHICKEN SUB ON WHOLE WHEAT .... ONLY THING BAD ABOUT IT IS THE BACON , WELL NOT BAD BUT UNHEALTHY.I WANNA EAT HEALTHY ITS A HARD DISCIPLINE   IN MY FAMILY ........ IVE BEEN DOING THIS SINCE APRIL 2007 , AND  IM HAPPY IVE GAINED WEIGHT BUT WAY TOO MUCH FAT , BUT IM NOT A FAT GUY DONT GET ME WRONG I JUST LOOK BULKY NOT FAT. BUT IM PISSED OFF , IM NOT STRONG ENUF.. MY GOALS ARE TO BENCH 225LBS BB AND SHOULDER PRESS 75LBS DBS ,  UN SPOTTED FOR LIKE 5 REPS EACH I WOULD BE HAPPY , BUT I WANNA LOOK GOOD , SO I HAVENT STARTED CUTTING YET CUZ I WANNA BE A CUT 190LBS , I WANT TO RUN TO GET CARDIO BUT DONT WANNA LOSE ANY MUSCLE IVE GAINED... IM SO LOST NOW , TRAINERS ARE TOO PRICEY AT THE MOMENT FOR ME.
 
 IM OPEN MINDED TO ROUTINES! MY CHEST ROUTINE I LIKE , I HAVE ANEW ONE IN MIND I HAVE ONLY BEEN DOING THIS ONE A MONTH AND WANNA WAIT ANOTHER BEFORE I SWITCH , SAME WITH MY SHOULDER ROUTINE.  BI ROUTINE IVE BEEN DOING FOR 2 WEEKS , AND NEVER FELT A BURN LIKE IT SO IM HAPPY WITH IT FOR THE MOMENT , COULD USE ADVICE ON ALL THE REST..... IF I DID CHANGE MY DIET , WHAT KINDA RESULTS WOULD I SEE AND IN HOW LONG APPROX? HAHAHA I KNOW KINDA OUT THERE BUT I MEAN IF I CHANGE IS TO NOTHING BUT HEALTHY FOODS BUT ATE BIG WOULD I STILL GAIN MASS AND LOWER THE FAT%AT THE SAME TIME????
 SHOULDERS ARE SO WEAK SO , SORRY TO RAMBLE GUYS IF U SEE FLAWS OR HAVE ADVICE IM ALL EARS , THANKS!
                    

 FORGOT TO MENTION MY STATS ,  ALMOST 22 YEARS OLD
BETWEEN 5'11 AND 6 FEET TALL
STARTED AR 145LBS , NOW WEIGH BETWEEN 175-185LBS , I FLUXATE . BODY FAT UNKNOWN THANKS

Your diet is key. You need to improve that before anything else.
 
another thing you may want to look into is another routine. A 3 day full body routine is now generally accepted as a better option than a split like yours.
 
I'd say that improving your diet would put you well over the "hump" and changing your routine up would help too.  

Gin Rummy: Simply because you don't have evidence that something does exist does not mean you have evidence of something that doesn't exist.(from the boondocks)