Gaining muscle while losing fat is very difficult. Your results will be slow at best I predict. I would try to focus on losing the fat first and then putting the muscle on after.

Losing weight requires a calorie deficit while gaining muscle requires a calorie surplus ... so you can see how these are very opposing goals.

This is not to say it's impossible ... but you have to have *very* precise control of your diet and be prepared to have slow progress.

IW