Fat redistribution is one of the last changes that most people get on T, and it does not work as well for people who are overweight. So to maximize the effect of that, you'd most likely need to slim down. You could also aid the effects of this by building up your shoulders and upper body.
Your assessment of your bone structure may also be hindered by your size. I used to think I had really wide hips and that getting below a certain weight would make them even more noticeable because they'd be sticking out. At my largest, I had a 40" waist. I'm currently down to 34", T has moved a lot of my remaining fat around (off of hips/thighs, to stomach), and there is still no visible curve to my hips.