I would stay stick to the basics.. and don't mess with the boosters.
Glutamine, arginine, beta alanine, creatine, whey protein, NO product, Vit a, c,e, Zinc.
combine all those and trust me with good food and good training, You can reach your goals.
I am not recommending GH. Personally, however, I would take it over all the dangerous supplements available on the market.
You can get GH through sponsored sights that sell the stuff. Just be careful full of knock offs. There is generic GH from China. And there are a few companies that make a Legit product in China for a good price. Just do your research before you do anything