I use to weigh 280 now I am at 247.5 according to the digital scale at the gym. My chest, traps, lats & delts, back, and arms are starting to come into formation. I went from being sloppy fat to solid but still have belly left mainly upper belly. I was taught to lift heavy and correct forum. Now I want to shape my structure tighter. i always do heavy sets, if i need to do more sets with lighter weights, how should I go by this. I want to bulk and strentgh and tighter sculpture.