One thing about the pumps is to consider whether to use a shallow-well jet pump, like a Goulds JS15, or a simpler utility pump, like the ones I assume are part of the original quotes, since Myers' largest jet pump is a one horsepower model. The jet pumps create more useful water flow, useful because it is at a higher water pressure than a utility pump can manage. The jet pumps cost more, however, but compensate by using less energy over their lifespan, and often, the higher pressures can make for simpler system designs.