I'd start test at 500. Every three weeks bump it 50mg. Some people bloat like hell on orals like dbol/drol. Some don't. YOU'LL have to see what happens to you. It's really individual. I'd keep it simple like that and if your shit's in order with training, diet and rest, you'll grow. Drop your training volume some. Let the drugs work without eating up recovery and energy. If cutting back on work helps nattys grow, enhanced athletes can benefit. As you are bumping the test up, gradually bump your volume back up too. You'll be happy you did.
So your talking straight test only? start at 500mg/week then add 50mg every 3rd week... whats cycle length? in a 16 week cycle your highest dose would be 750mg.