I'm not sure what the GH has to do with it, but I think the T3 is a bad idea for a few reasons, the main one being that you need to lose some fat and it's easiest to lose in the beginning stages of training when the bf% is high. By relying on the T3 you'll be developing an adaptation to an accelerated thyroid output. This can only work against you. Sure, you may lose a little more fat faster, but you'll also develop a tolerance to a hgher metabolic rate. Once you stop, the metabolism slows down and you'll gain the fat back --- PLUS, now that the fat levels shold be lower, it'll be that much harder to lose. I suggest get rid of the "easy" 4-5 % through training and diet and then when fat levels are low, kick in the T3 if you like.
I would also suggest using some ZIP, but I know you hate it when I promote my products. : )