winny test

Hi guys, I'm: 5ft 11, 185lb, 42" chest, 12% bf approx My diet is pretty much nailed down and is my training, My question is as the title states, I'm going to be starting a 10 week cycle soon of test 400 and winstrol, I'm looking for advice for when is the best to start the winny at the start...

STATS: Age 22 Height 175cm Bf 14% Been working out for 7 years but seriously in the last 3 years and had some neat results. Looking to add a few exrra pounds (of Lean mass lolz). This will be my first cycle and yes I know that I should use TEST only but already bought Wins and think It aint...