Look. Don’t let some of these comments discourage you. You’ve got a good start and should be able to get an idea of where you need to go with a little experimenting.
The pump is the biggest challenge. You have a pretty good chance of being able to draw a bathtub full of water every few days or so with what you’ve got.
Try it. Your inverter should have a “surge” rating, maybe 2500w or so. It’ll carry that for a second or four prior to tripping off, which should be enough time to spin up your pump. Try relieving your pressure tank pressure down to zero to reduce the head pressure the pump sees, start with full batteries, and throw the switch. I bet it’ll work. (Don’t forget, at 750w, you’re talkin’ like 65 amps, size the wire between your batteries and invertor accordingly).
You’ll want more panel. I work with a 200w stationary set-up,20a Morningstar controller, 260ah Trojan batteries, and a 600w sinewave converter. I’m building a tracker right now which will boost panel output by about 30%. I run computers and ham radio.
When I come across a deal on more panels, I’ll get ‘em.
Anyhow, try the pump. Let us know how it goes.
What do you think about those Trojan batteries? I’m trying to decide between Trojans and Surrettes. The Trojans are cheaper.