POZ bodybuilder and first post here!
I competed a bit in the 80's went thru the whole body change thing and was able to get on test (androgel) 4 years ago. The best thing you can do I think is find a good bodybuilding nutritionist and tell him of your medical history and your goals.
Doing that I've gone from 155 to 195 and am still gaining. I plan to start hitting Masters Open classes in 2 years.
I supplement with the usual stuff, just a bit more because my body needs more. Looking into Deca thru an aging clinic, but so far the Masterone and tren based OTC's stacked with my androgel have worked pretty good.
Additionally, there are several studies going on of the efficacy of low dose Serostim to prevent or reverse body changes for LTS (long term survivors) and non progressors.
Most of all, EAT. EAT clean but eat well, minimum 6 meals, 8 meals a day. talk to the nutritionist I recommended you to go to about that.
PM me for more info.
oh and yeah, I'm single.
Brock