Any time you take a steroid, it is going to shut down your natural test production. Over time, this will not only effect your libido and ability to perform, but there is a good chance it will effect your aggression and drive to train hard, plus cause lethargy. Factors like age, cycle length, dose and genetics, will play a role in how shut down you get. At the least, I would use a small replacement dose of test. 200mg EW is plenty to keep yourself feeling good. And really, as far as cycling goes, test is the most addaptable steroid you can find. Along with estrogen control, you can get in great shape on a diet, with test. Or, you can use the same test to grow in the off season.
Heres another thought. You only want to run orals for so long. They are toxic. Winstrol will effect the liver and lower your HDL quickly. Dieting takes time, if you want to get in the best shape you can. For guys that are already lean, I still have them diet for 16 wks, to come into a show. With low body fat, they can keep the cals higher through a lot of the prep and have a good chance of adding new lean mass in the process. You aren't going to want to run winstrol, or any other oral for 16 wks. I'd start with test and adex. Then add the winny in, for the last several wks.