Your upper body looks pretty good man. I’m guessing your legs are small, no offense, otherwise you would weigh a lot more. For example I’m very short, 5’7", but I weight 190lbs. Most of my weight is in my legs and my upper body doesn’t look any beefier than yours. I think at your age with your natural levels you would benefit from switching your training style for awhile and packing on pounds naturally like other said. If you are going to run Test and be damned, not listen to anybody else, then run the typical 500mg/week and split the pin 2x per week.
Here is the PCT recommended from KSMAN…
1a) Inject 250iu hCG SC EOD then do labs for TT, FT, E2 after 4-6 weeks. If things have not improved, stop and go to TRT.
1b) Now if T levels acceptable, now do Nolvadex below to get hypothalamus and pituitary in the game.
Now hypothalamus and pituitary are active.
1a) 20 mg Nolvadex EOD [Clomid if only option]. Then do labs for LH/FSH, TT, FT, E2 after 4-6 weeks. If LH/FSH low, stop and go to TRT. If LH/FSH good and T levels still low, stop and go to TRT.