what are the rest of your stats?
height
weight
diet
bodyfat
training
PCT
Is this your first cycle?
How are you taking the sust? Once a week, twice a week, EOD, ED???
If you are making gains, that is good, but dbols will mostly give you water weight with some strength gains. usually used to kick start a cylce not in the middle of one.
300mgs/week is a little on the low side, but if you are making gains that is fine. How long are you running this cycle?