Got the land, need a solar 600 ft well solution

Will you be off-grid?

In that case, I'd be inclined to look at a system (the sqflex pumps mentioned by @geosierranevada seem to be well regarded) that pumps directly with pv power to an at/above grade storage tank using available solar when and to the extent available. From the tank, water would be pressurized with gravity and/or a smaller pressure pump running on demand from batteries when required.

I have 2 wells and have been running SQFlex for about 12 years. The only problem with the 12 year old pump was the low water cut off 
, which allowed the pump to keep running in my low recovery well. I caught it in time and now run that well on a timer ( AC power ). I get about 200 gal per day out of that well and it supplies water to our home.  I had a new well drilled last year for irrigation and back up for my low recovery well which is 42 years old and always low or slow recovery. My new well was quite pricy because everybody in California are drilling wells. The well driller used a witch ( special twig ) to locate water (  we live in Southern Sierra Nevada ) and he told me before doing so that he would not drill unless he found water with his witch. 300 ft well 270 ft thru granite, hit water at 40 ft, i set pump at 250 ft.

Good luck with every thing at your property.    George