Great call with the wrist curls - those will help your stick handling a lot!
Focus on building up the strength of the big muscle groups - legs, arms, back, chest, abs, etc. Also... you mentioned some of the exercises you're doing.. what about legs (squats, lunges, leg extension, leg curl)? You need to strengthen your legs so you're more powerful on the ice. Speaking of power... once you build up your strength base, look up some plyo exercises you can do other than just jumping lunges. Try things like tuck jumps & squat jumps.
You also want to work your agility... I'm not sure if it's just a north american thing, but there are 'ladder drills' you can do... its just a cloth/plastic thing that goes along the floor and looks like a ladder, and you do different quick feet drills with it.
Another pointer... as mentioned previously, if you have access to a bosu ball, or extreme balance board, use them as they will increase your agility and help prevent injuries!
As for cardio... focus on sprints of varied lengths to get your cardiovascular fitness up. Steady cardio isn't really what you need to focus on as hockey players are required to perform for relatively short periods at a time.
Anything else.. send me a message, otherwise good luck!
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