cutting with test, and then finishing with winstrol

[Lineaso]

I’m sick of being lean but having a stomach. I want to get cut and lean. Currently doing 400mgs of test but not getting the physique I am after. I’m 216lbs, 5’10’’ 18% body fat, 47 years old.
What would you recommend I use when it comes to finishing my cycle off? I want to use winstrol I think at 50mgs a day. Would that be a good dose?