Hung but want to be bigger? Bad idea?

Okay I am nt going to go into how big I am, there are pictures. BUT, I want to be bigger, especially in girth. I am working on losing weight 248lbs (not all fat, amature teen bodybuilder [18yo]) and I am working on losing more fat around the pelvic area because when I push back on it, it looks like I have maybe a half an inch or so "hidden." Any ideas on how to lose weight easier and/or make my junk bigger. Or will pubirty do that for me? JW. Thanks