How much of the deca/dbol are you looking to do? A friend of mine did a stack like this and worked out great kept 75%-80% of gains.
Sustanon250- Week 1-3 500mg week 3-6 750mg week 6-9 500
Dbol- not sure how he worked this in exactly but tapering up from 20-60mg and holding 60mg for about 2 weeks and back down to 20mg
Deca- 300mg week 1-2 400mg 2-4 500mg 4-6 600 6 500 6-9
clomid at the end of the cycle to help with natural test production
I'm in no way an expert, just a simple cycle that a friend of mine did with great results... i'm sure there's a few things wrong here and there that i can't remember.
I havnt tried deca yet, but I have a dbol test stack and for me the results I got were so amazing for me, I gained about 30 lbs of mass I still have today, and I've been off cycle since November of '04. The Worst loss is the strength you lose sigh