Nice stuff about the Tanks - are those Stainless Steel Tanks , or Lined ?
Also the Water Temps You Mentioned from Shallow Source , what are they in Winter ?
DIY - Wells are Very Easy in Florida ~ Yes Submersible would be Cooler , Issue with Motors Being Rebuilt as Most of those @ Least on Submersibles are Part of the Check Ball System ..
Which are Connected Straight to all 7 Stages .. Currently Runs approx 3 Min. to Top Up 50 Gallon to 70 PSI with Hose Running ..then it takes 5 Min. It will Kick back on @ 52 Psi ..
( Just to State Run Times ) 5-7 Gallons per Min. @ 62 Degrees Water Temp . .after going 60 ft Travel @ Only 2.5ft Below Surface . . // In Winter Street Water ( Town ) is 40 Degrees Well Holds around 54 Degrees @ 60ft Travel .
( More Important would be Cool Well Water ) on DIY WELL :
https://youtu.be/d6fBjKCGjQM