Thanks, everyone, for all the help so far. However, I need more!
We are planning a pool (no spa) with the following specs:
~22k gallons
1x24" scupper, 2x18" scuppers, about 1ft above water level
3 bubblers
3" suction, 2.5" returns
~30ft from pool to equipment, about level
Polaris 280 with...