The first thing nobody tells you about going off-grid is that water is the real boss, not power. You can limp along without lights for a night. You cannot limp along without water for your animals, your garden, or yourself. So when we stood on 1,532 acres of East Texas piney woods, the well came before the solar panels in our head, even if the solar had to come first to run the pump.
Our sequence was deliberate: solar first, then the well pump, then the ponds. The panels are no good if there is nothing to power. The well is no good if there is no power to pull the water. So we put up solar, dropped in a solar well pump on the existing well, and only then started thinking about storage and distribution. If you flip that order you are hand-carrying water in buckets while you wire panels. Ask me how I know.
We built two ponds. One is for irrigation and the garden. The other is aquaculture, tilapia and catfish, with a closed loop back into the orchard. The ponds catch our ridiculous East Texas rainfall and hold it. High rain and humidity is a curse for some things out here, but for water storage it is a gift. We fill the ponds, gravity-feed the garden rows, and pull fish when we want protein without a trip to town.
Get your static water level checked before you buy the pump. Our well is shallow enough that a solar pump handles it, but I have seen people sink money into a rig that fights the water table every morning. Test the water too. Ours runs clean, but if yours carries iron or sulfur you will be filtering before the pressure tank, not after. Do it in the right order and the system just runs. Do it backwards and you will be out there at midnight with a wrench.
That is the short version. The long version is in the ground, and it works. If you are setting up off-grid water, start with the sun and let the well follow. Everything else is detail.