Rborn, I also live in Cypress. I think that's my house I see in the background of your pool and coping photo!!! Not really, just wanted to add a little levity to a disheartening topic. I have sent you a private message.
I do NOT want to go through what you're having to endure. No one deserves that - and for sooooo much money! Unbelievable. Even spending this kind of money on a car, you at least have the lemon law to protect you. And you can return the car or sell it and recoup a large part of your investment. Not so on a pool build - scary. Texas desperately needs to pass pool legislation.
Your coping and tile look great! And I think the stone work is beautiful. It looks like what we see out in nature by a creek or lake. Keep in your sights how lovely the water falling over the rocks will look!!
I wish you the very best in this all turning out the way it should. Not sure what I can do, but if there is anything, neighbor, please let me know!! Suz