Filling a new pool

Therma pool 2500 gal, vinyl, 5 foot deep therapy pool, Jed 103 ozone generator, Indoor, Heated by home boiler through heat exchanger, Syllent pump 2.6 amp @ 120 volts, Advantage cartridge filter.

The therapy pool install is 1 or 2 weeks away. We have a private well with hard water, perhaps 22 grain. Iron is a problem for some of my neighbors, but we have no staining on our fixtures. No testing yet. My initial question, should I look at filling with a mix of hard and soft water?

PJ