Ok your weight just flagged a potential area for improvement from me. You're at 142 lbs which is very very light for what you say as 13-16% bf. This means you don't have much muscle mass as a starting point, for steroids to give you much gains. You'd be better sorting your diet out, hitting a better weight level and seeing what that does for your gains first. Until then, all AAS is to you is a magic pill.
Can you list your diet please?
As really, you're far too light.