Thanks again for the advice guys! I should add that masculinizing isn't really an issue anymore, since I've actually done that completely. In terms of the ratio of testosterone to estrogen, one of the reasons my doc switched me to a lower dose was because my bloodwork came back and I had twice the upper limit of the normal range of testosterone in a biological male, so my body doesn't seem to mind the additional testosterone.
Putting on lean body mass is going well too, a few months ago you could see visible gains every week but I've just plateaued lately. Weight-wise, I've already dropped ~70 lbs in around 1.5 years (I was huge, shit was rough before I transitioned). so diet and LBM isn't really a problem anymore.
I've been interested in bodybuilding for a while though--my sister's a bodybuilder and she's gotten me really interested in it as well, so I wanted to see if there was any way to set myself up well for that while losing the rest of the weight, as well as ask some stuff regarding additional estrogen from AAS and stuff like that, specific to my situation.
Looks like I'm just gonna keep doing things (semi)naturally though until I'm at 10-15% BF, then maybe I'll think about AAS again. Thanks!