6 or 10 weeks?

It depends on how you react to it off course. IMO the best general stacks in bodybuilding are test/tren/winny and test/deca/dbol.
Without knowing your previous concentrations, i would say test 750mg/week, deca 500mg/week, and dbol 40mg/day for the first 5 weeks or so, just to give an idea.
I would up the test a litlle to 500/700. Keep the deca a bit lower than that, 400/500.