32F, Are my facial features 'bad' enough to be a good candidate for plastic surgery? (Photos)

Are you a good candidate for a Rhinoplasty‘s? Based on your photos, you appear to have a small dorsal hump, a slightly bulbous tip, and the tip plunges down with when you smile. These are all features which are addressed in a traditional rhinoplasty. You do appear to have a prominent chin which makes your overall appearance stronger than you probably like. For that you can consult with an oral surgeon to find out what your options are.

From the profile, you have that bump on the bridge, and although you don't have the world's droopiest nose, elevating the tip would probably be a good idea. You posted a good assortment of angles, and your photos illustrate something that's quite common -- that the three-quarter views, the final ones posted, make the nose appear longer and wider at the tip and more prominent than the "classic" profile photos do. And the three-quarter views are more important, because those are the views that most people actually see: when they see you in direct profile, they're typically not interacting with you.
How *much* to elevate the tip, or deproject the nose, or make other changes? We figure that out with morphs, well before surgery. I'd love for you to see some excellent professionally-designed morphs of what could possibly be done with your nose. Morphs could also help you identify better just what's bothering you, and help you set a goal for the rhinoplasty that's accurate for your tastes. Profile and three-quarter views would be particularly important in morphing your nose. (Side note: in my opinion, morphs should really be done by the surgeon, or he should direct an assistant as she makes the morphs. Morphs should be made with a constant eye to what actually *can* be done in surgery, for that particular nose, and the surgeon has that information and judgment best.)

I'd love for you to see some excellent morphs of what could possibly be done with your nose. It might make you feel better about the possibilities. Morphs help you plan your ideal goal, and help the surgeon understand what you need in order to be happy, and correlate that with what he thinks is possible in his hands.
Remember that rhinoplasty is an exquisitely difficult operation to get right, and you should only have surgery if you are able to make yourself very confident in your surgeon's skills. The changes that your nose needs require advanced techniques, and skill that most plastic surgeons don't possess with expertise. For most noses, it's much better to not have surgery than to have inexpertly-performed surgery. Read my essay on how to stay out of trouble while selecting a rhinoplasty surgeon. And it also discusses how to take photos that are best for online evaluations.

Given you concerns with the appearance of your nose and obstruction, a septorhinoplasty would be the only option to address both of these concerns. Regarding your nose externally, reducing the dorsum and tip refinement and a tip lift would likely provide you with your desired outcome.
Regarding your sinus infections, discuss this with an otolaryngologist and don't assume that nasal surgery will have an impact on this. It might, but there's much more history to take regarding sinus issues that could shed light on the cause of these issues and potential options.
A reduction of your chin would take out some of its prominence and shorten the length of your face overall.