Hey brother, 

Ok for growth hormone therapy, you don't need a ton. I seem to find that the older a person is, the more likely they are to respond to lower doses of GH. I would aim for about 2iu of a high quality GH, maybe even a little less of you are using pharm grade, like 1.5-1.8iu. See how that works for you. You can always go in and have growth hormone and IGF test, if you are interested in seeing where your numbers sit. At this dose, taken your round, for a guy over 35, I would expect to see some benefits, including a little added muscle gain in the long haul and an ability to eat more without getting fat. Of course, you will see improved overall health and recovery. First place I notice it is in my skin, air and finger nails

On your other question, having some caber on and would be a smart idea and if you need it, .5mg 2x wk should be good. I would certainly start with an AI though. Adex at around .5mg EOD will be plenty to start out with. If you control estrogen, proges will less likely become a problem. And the adex would also help with estrogen spikes from the HCG as well. With HCG maybe a lower dose, more often would make a difference