I have installed several solar pumps for off-grid applications. Since you've already got a 220V pump i guess you're going in that direction. I assume you will have a solar system at your house including panels, inverter, and battery system. Just be aware that a regular well pump pulls quite a surge when it starts, Franklin says that it is 6-8 times normal current if only for a milli-second so you have to have enough of an inverter to handle that.
I really like the Grundfos SQ Flex system for off-grid. It runs on 30-300 VDC or 90-230 VAC which makes it plug and play for either straight solar or regular AC. No special converter box or controller required except for the correct interface box. You can even power one with a small generator like a Honda EU2000i. If you are set on a AC pump look at the Grundfos SQ series which features a "soft start" that really helps with the start-up surge. It ramps the pump up slowly and doesn't pull as much current. I have also used the Lorentz solar pumps and have been pleased.
Keep this thread updated, I would like to know how everything works out for you and how much power your AC pump is pulling and how many panels etc. it requires.
Good luck.