You need to get your viral load undercontrol. You shouldn't be worrying about the gym and should be on some complimentary medicine forums looking for more you can be doing to contain your viral load not worried about AAS right now. Also appetite is often a reason for wasting, how is your appetite?
HIV is a virus, AIDS is the advanced cause of HIV. Having HIV on todays cocktails isn't too bad, im sure you would have no problem obtaining your goals. AIDS is a different story, I hope your test comes out with more favorable numbers.