TMD treatment Phase II of Neuromuscular Dentistry

After many long months,  I finally have something to write about. I've been waiting for what seems like forever to get the final cost of Phase II of my Neuromuscular TMD treatment. I've been wearing the jaw orthotic this entire time. I really can't live without it. As soon as I take it out, my left jaw joint starts to ache really badly. So I know it is working every time I put it back in and feel relief. If I do not find a permanent solution, I know I would have to wear my jaw orthotic constantly. I can't even take it out for an hour without experiencing pain.
As you may remember my new option, rather than getting braces, would be to have a working orthotic made so that my dentist can re-position my jaw based on my teeth. She would position my lower teeth behind my front teeth, while trying to preserve my jaw comfort. If the new position works for me and I don't have any pain returning, she will then restore some of my teeth using crowns so that my jaw permanently sits in the new position. Great, right?
Well, yes and no. This is a great alternative to braces. It will most likely take less time, and won't involve as many visits. Also, I feel that my jaw used to be positioned in this way because I didn't always have an open bite. I used to be able to use my front teeth (upper and lower) to tear. Then around when I was 18 or 19, I noticed my front bite was opening up and my jaw had become uneven. I think my teeth wore unevenly, possibly because of a filling and also because my jaw was a bit unstable to begin with.
My thought is that my jaw is only going to feel better with the movement, she'll put the crowns on, and I'll be done with this whole thing.
The cost of Phase II will be at least $20,000. This is obviously very steep and the reason my dentist says many people do not move onto a Phase II or permanent solution. In my mind, this is still cheaper than the $90,000 of surgery and the cost of braces before surgery. (I can't imagine having to go that route...)
Personally, I want to make the best decision. If I go through with Phase II, I really should go through with it to the end. Meaning, I can't just stop halfway because my bite doesn't work out completely as planned. There's a lot of unknown to that choice, but also I know if I don't go through with it, I'll be stuck in my current situation. It's not the end of the world and no, it's not a fatal diagnosis, so I am grateful for that. It's just a big decision right now and I need to seriously think about all my options and what is really best for me. What would you do in my situation?