i use an iwata w400lv 1.4 for spraying. Unreduced. Just mix 1-1 with activator.
Depending on the job at hand, i start cutting with 800 or 1000. Work my way up to 3000 trizact and use mequiars diamond cut compound and a wool pad.
I let the car sit in the sun a full day before cutting, then let it sit another full day after the initial 800-1000 cut.
this is after just the wool pad.