I'm going to be very honest, Mast is one of those compounds that gets a bit misunderstood. It’s mainly a cosmetic compound which gives you hardness, dryness, that finished look which really only shows when you’re already lean. At higher body fat, those effects are pretty limited, so it’s not where it shines. You’ll likely get more out of keeping Test steady and focusing on bringing body fat down first. Then if you add Mast later, you’ll actually see it do what it’s known for

but it's your call.