Plumbers?

Liscensed 30 years so I know what I'm talking about.You need a three inch drain and you can stub three inch up and the same flange that glues inside 4inch will glue over 3 inch . rough in is 12 and a half inches from the wall to center of stub up with half inch Sheetrock wall covering. If you need any advice pm me and I will give you a phone number. I've been plumbing residential new const since 1980