What can be done for a deviated septum and bulbous tip that wouldn't make me look completely different?

It' s a bit hard to tell from your photos, but I think you could expect to achieve some refinement of the tip with rhinoplasty.  The bridge could be reduced slightly as well.  I suggest an in-person consultation with a rhinoplasty specialist.  Computer imaging would help to show you what might be possible with surgery.  

You would have to be seen in person to determine what needs to be treated based upon your goals. Best of luck.

Correction of a deviated septum will not make the nose look any different. Taking down the dorsum of the nose to a slightly more concave profile and narrowing the tip will help it fit your face a lot better.

Your concerns can be addressed through a septoplasty and a rhinoplasty focusing on refinement of the tip of the nose.  A septoplasty removes and straightens the deviated portion of the septum which is the cartilage that divides both sides of the inside of the nose.  An examination of the inside of the nose would be needed to determine if your septum is deviated.  If you are concerned about asymmetric nostrils, an examination would also help determine the cause of the nostril asymmetry.  Nostril asymmetry may not be due to a deviated septum.    

cerealexperiments, interesting name; you are going to have to lose the piercings before you have your nose done. I will not operate until the holes have closed which typically takes several weeks. All of the noses that I do are designed to fit that particular patients face; that is what a skilled experienced specialist will try to do for you so go see one or two and get an assessment. Search the Internet for an experienced surgreon that does "only faces" and has great photos on their web site. Good luck!

The front view is too distorted by the focal length of the camera, that the entire nose and tip look huge.The other partial lateral views do not give the appearance of a significant tip bulbosityAlso, those partial lateral views do show a nice dorsum. Your face looks balanced in these incomplete views.On the basis of these pictures, I would recommend that your do your septum, skipping the rhinoplasty