[20M] Any advice?

http://imgur.com/a/N2y0a

Three main questions:

1) Which hairstyle looks best?

2) How should I pose for photos? I want to look into modeling after college just for fun, but first I want to be at a point where I'm 100% comfortable with my appearance. Any tips on how to get into it?

3) Should I get a nose job (see second to last picture for Photoshop reference)? I went to an ENT because I was having trouble breathing and he was said that I have a completely obstructed airway on one side of my nose (deviated septum). He said I would need a septoplasty in order to breathe normally and not snore, but that would just fix the septum. He said if I wanted the aesthetics fixed, it would cost a hefty amount. I have money saved up, but I want to know if it's worth it. That photo's just a Photoshop manipulation that I did.

Last note: I'm trying to get back into working out after a long break, but I've been trying to find the motivation to do so. Also, I started Accutane two months ago so hopefully my skin clears up completely.

/r/Rateme Thread Link - imgur.com