its perfectly fine to do bro.. theres really no need to exceed 2 ius per day of quality hgh but you can definitely add it to your trt... as long as you have quality and you dont abuse the dosage, you should see some really nice results...
They will go very well together! I would check out the options from @domestic-supply.com to make sure you get the best HGH. I would stick with 2-3 IUS per day