The problem with this forum is 1) That everyone here seems to have rather unrealistic expectations of coming out looking like a model and 2) The only people who really hang around are the ones who had issues, so it's like a big circle jerk talking about how awful jaw surgery is, and all the problems it caused them.
I think a large percentage of people have no, or very minor issues after surgery, but don't spend their days on an internet forum complaining about them. They just go on with their lives. I try to pop in now and then to be a voice of reason, but am often drowned out by the negativity.
I have some minor numbness in my chin, but it isn't really a big deal. I had a large movement, and as a result have some notching along my jawline. Sucks, but no one notices unless I point it out and highlight it for them. My face looks a little skinnier now too, which I don't really like, but overall look fine. There are ups and downs with any surgery, but if you do your research and find a surgeon who you are confident in their skills and treatment plan, chances are very good it will turn out fine. Perfect? Probably not, but that's life. I wish I had been born with a perfect jaw, and looked like a male model, but that didn't happen. I wish my Ortho as a teen would have addressed the skeletal issue rather than camoflauging it, but alas I can't turn back time. I had a pathetic jaw, not to mention I'm balding. So I got jaw surgery and am planning a hair transplant. Both are less than ideal solutions, but the reality is that these are the options at this point in time. We all want that perfect solution with no risk, but it doesn't exist now, and likely never will in our lifetime.
I think you might be well served to take a little break from this forum and not be constantly inundated with horror stories about what could go wrong. At this point I think you've probably done sufficient research to guide your decision. Find a good surgeon, have the surgery, and move on. The more time you spend looking for the perfect solution (which simply doesn't exist) is time lost from just putting all of this behind you.
I'm sure my post will elicit responses about how I got "lucky" or that my side effects shouldn't be considered acceptable. Maybe I was lucky, but I just want to point out that this surgery isn't all doom and gloom. Don't get caught in a circle of paralysis by analysis, spending years here looking for that magical surgeon who can somehow cut your bone in some special way to guarantee no nerve damage and mold you into a model. It won't happen and you'll just be further setting yourself up for disappointment.
Good luck with everything