bro, no flame, but I'm not so sure you should be using dbol as your first adventure into AS. First off, its a 17aa steriod and therefore one of the harshest you could choose. Yet you are asking pretty basic questions.
I would start with some test and or deca. If anything the dbol for the first 2 weeks at maybe 20 mgs ED.
But seriously I would spend a few weeks purusing the archieves on dbol before swallowing anything (dbol that is). I know plenty of bros have posted on some very sensible first time cycle.
How long have you been training? I assume you have you clomid and nova on hand.
When I started training I weighted 127pds (5'4"). I trained for about 5 years natural. I've done 6 cycles over the last 2-3 years, and now I am 202, not yet 1 month out from a cyp/dbol cycle. So you can do it, it just takes time...
Good luck!!
TPH