4 Premolar Extractions. Is there anyway to expand my mouth so I can breathe better?

I had 4 Bicuspids extracted for braces when I was 14-15 (currently 18) . I currently have a couple of problems with my health. I have a collapsed arch/narrow smile and to make matters worse 4 of my wisdom teeth are coming in , shifting my teeth . I was wondering is there anyway to expand my mouth so I can breathe better? Can my wisdom teeth substitute my previous molar extractions ? Surgery makes me really uneasy . Is it possible to push the teeth forward and is this an good idea? -Thanks.