Good Stack?
 

I'm 19 5'5 140, lifting just over a year and want to get up to 145 within the next few months. I want to do the USP Labs Prime and PowerFull stack and as a post, a weight gainer with 5 grams of Creapure....what are some of your thoughts on that? Is it too much?

just eat more food.

tons of food
whey
multi
fish oil
mono
more food
keep it simple

I agree with the previous comment. Here are the supplements I recommend:
1. multivitamin (generic is fine)
2. whey protein (but get most of your protein from food)
3. creatine
4. fish oil

That's about it. There are a few others that may be worth taking, but not many. Spend your money wisely.