Cycle Question: Dbol Timing

My cycle will be 2:1 sust/Deca +dbol
Weeks 1-20 Sust @ 600EW
Weeks 1-18 Deca @ 300 EW

Anyhow, my question is when to add Dbol into my cycle to avoid plateaus. I plan on using it for 8 weeks @ 50mg but would it be better to start at week 10 and end it with my deca, or start at week 12 and end it with my sust?

Most people run dbol first weeks into a cycle as a jump start and maybe later on to break through sticky points..i would use some anadrol around those last weeks of the cycle

I was thinking of doing the same, although most people start slowing their gains around week 12, and with an extended cycle like this I would like to avoid that hiccup.