OP, if I were to do it again I would
Spend time drawing designs, lots of them, measuring, colouring, and imagining you pool in the yard. Have mates over for dinner and get their thoughts. Sit on that for a bit as design is very important to being happy. What you see others don't, and vice versa.
Once settled on size, shape, position, and where the filtering will go. Spend time working out exactly what brands and MODELS of gear you want. From skimmers box size to pool covers to standard or deluxe pool lining. Yes its exciting but gets laborious. However the lads on here can fast track it once you know your volume.
All the time keep asking around for small time builders, maybe less than 15 builds a year. I found house builders, excavator drivers, pool shop owners are a good source of who built THEIR pool.
Then get quotes as you have apples to compare, and you focus on how the relationship goes through the quoting process.
You still have to hang on and hope, but have a better chance. And probably write of 18 to 24 months form go to wow.
Unfortunately I found the builder I was chasing after pulling the trigger on who I went with.
I found my guy lied about his number of builds, and quoted me brands but no model, or models only available through his wholesaler who don't deal with the public. Of course they would do the job but just. They keep it low spec to be competitive, and then if you want do a variation to up spec or change the item out comes the price gouging. My fault I guess for being too trusting and eager. They know its an emotional purchase so say yeh to whatever you are asking then quote you ?
PS, down here in Australia most pools are salt water with gunite shells and pebble finish. All good mate.
PSS, if you are not planning on staying for a long time, consider an above ground pool for 10K. Usue it for a decade pending age of kids, then roll it up and take it to the dump when done. Its heaps cheaper, easier, faster; just not as aesthetic or potentially value adding.