D1. 25 rounds
Upward and onward.
Kazikame, you could try to find any traditional three day spilt program and substitute BW exercises ( pistol for squats, handstand push-ups for shoulder work, etc...). Convict Conditioning has some programs, look up the Good Behavior program for details. Bulking up is affected by diet, exercise sets and reps and other factors. The biggest consideration is genetics. Your best bet is to maximize your genetic tendencies, not battle with them. You can be incredibly strong without 21" arms. Good luck and welcome.