Im not sure what your goal is. Winstrol is considered a "cutting" drug, producing no fluid retention for most men, but deca is more of a "bulking" drug and will produce great amounts of fluid. If cutting is your goal, you may find that you will do better with NPP, which is fast acting deca. You would want to take about 400mg EW, split into EOD shots, 100mg per shot. You could split your test e into 1/2cc per shot and reach your dosing while keeping your injects the same every time. I believe this would couple much better with the Winny. As for winny, even the injectable version does eventually have to pass through the liver. It will still be more toxic than a non 17-AA steroid. For this reason and becuase it can cause joint issues, I would suggest running it no longer than 8 wks at the most. 6 wks would be more ideal. I woudl go with the oral as it is much easier to take. The water based shots can be very painful and are more prone to infection than oil based gear. If you do use the water based winny, you want to do ED shots. Geneza does make an oil based winny if you do want to go with injections. Injectable or oral, here is how I would run the cycle for 12 wks
1-12
Test 500mg EW
adex .5mg to 1mg EOD
3-12
NPP 100mg EOD
7-12
Winstrol 50mg ED
If you prefer, you could always swap out the winny for masteron, which is a great DHT based steroid. 100mg EOD