I would stop the deca anyway your test dosage is too low to run it with deca you should have a 2:1 ratio when running deca and for the dbol I have done it at 40mgs but i would do 50mgs my next time so 40 or 50 should be good and usually people consider 22 to be too you g but everyone is...
You should do 2 shots a week because 250mg wont do too much an if your worried about water weight, throw some winstrol in at the end of the cycle to lean out your gains.