Testosterone is a good place to start. But you are pretty flippin' big already at 6'5, 235 pounds. If I were you I would cut that Testosterone with a heavy anabolic like Deca or Eq. The combination would give you very noticable gains above and beyond what you are geting now.
I would say, 250mg of Testosterone Enanthate with 200mg of Deca every 4 days (get a calendar at put a little slash or something on the corresponding days). That would put you at 437mg per week of Testosterone Enanthate and 350mg per week of Deca... for a total of 787mg per week of total androgens admisitered per week.
You get up to 250-260 and I want to see some pics of you standing next to Gary Coleman
