Fitness Blog" on my site or the last couple of logs I kept here) - adding in behind-the-neck BB military press and single-arm DB lateral raises really made a difference for me as well. Re building your back, focus on the big back exercises, like deadlifts, bent over BB rows, reverse rows, and pull-ups - the last three especially helped me gain width in my back. Or you can do several heavy, low-rep sets of squats before starting your work for shoulders and/or back (or start your back re several heavy, low-rep sets of deadlifts) to help. That said, keep experimenting re training to find what works best for YOU.
Using creatine, BCCAs, and protein should be "given" factors, not "tricks", and regardless of what else you are doing and using, should be constants, IMO (unless you get all your protein from your food, and then a supplement for it is not necessary and more for convenience than anything else). Preworkout products (i.e. Jack3d) can be used, but are not necessary.
Carb cycling can definitely help, but I'd recommend doing MORE than just that - look into CALORIES cycling, as opposed to just maintaining a set caloric intake and changing carbohydrate consumption. Remember that if you want gains, you need to EAT for them.
Re HGHup, you don't need to stack it if you don't want to, since it increases Testosterone as well - and if you've never used it before, then I recommend using it standalone first, to see how it affects you; or staggering the start of another product by a week after starting HGHup, for the latter reason. You don't need to use a product with AI properties with HGHup, no. If you want to stack HGHup with something else, then you can, and many use the HGHup/FREE TEST stack (staying with Applied Nutriceuticals products with this stack) - FREE TEST was the FIRST product that helped me really gain muscle mass in my upper body re delts and arms (although training was also different and I was only doing resistance training three times a week, the first session ~20 minutes, the second ~40 minutes, and the third ~25 minutes).
Personally, I would have recommended IGF-2 over HGHup, but that is only my personal preference (and because IGF-2 is the ONLY natural Growth Hormone booster that works with MY body). Again, you don't have to stack it with anything, but you can.
If you want to stack, then I recommend using Erase (or FREE TEST - or the new Erase Pro) - this is a stack that worked very well for me (that said, remember that my feedback re products is specific to me, so what I experienced may not necessarily be what you do). That said, have a look around at various products (including the ones I have mentioned) and see what others have stacked with HGHup (or IGF-2), and choose the one that best suits YOUR goals and needs.
All the best for 2012 and achieving your fitness and competition goals!