Would it be okay or a bad idea to have a 3rd rhinoplasty?

It is hard to say without an actual assessment, but keep in mind that with every surgery, the risk of complications goes up. You have already treated the are twice, which means there is extra scar tissue to work around, and the chance of lacking blood supply to that tissue is also compromised. I would say that treating the airways should always be the highest priority, but you must really contemplate the severity and how much you are willing to risk with a third procedure. There is the possibility of things getting worse after.