HGH Cycle Adding Test

I’m currently on a hgh cycle. I’m about a month in, little over. I would like to add a AAS to my cycle as well. I can only take one that wont stay in my system for too long, 2 months max for a UA detection purpose. Someone said Winstrol orals would be a good route and supp that with arimadex. What do you guys think? I’m 20 yrs old, 270 lbs, 19% bf, not worried about cutting bf and have a clean diet. Looking for mass/strength gains. Had surgery in january so my bf is a little high but will get back down to normal (15-16%) once i start going hard again. Thanks for any advice!!