My non-expert guess is with a pool that size, you'll need to run the SWCG 4-6 hours to generate enough chlorine, so you could calculate how many GPM and what size pump you would need to turn pump 45,000 gallons within that time.
Coping is done. I have 6 umbrella sockets around the pool. I also set some 6x6 pt around and in front of pool pavilion and put some fancy rock in it. Gonna use leftover travertine as stepping stones.