Here's my advice:

1. Get the well report, or have one done. This will describe flow, draw-down, etc. This will inform how much volume the pump can produce without sucking air, and thus your pump size.
2. Do some math. I'm sure you know that feet of head * .433 = PSI. So, based on pump curve, a 1.5 hp pump produces 35 gpm at about 65 psi (~ 150 feet of head). Good for small-medium 30 psi spray zones.
3. Based on the well's capacity, the size of your site, and the pressure required for your emission devices, choose a pump. A VFD is a good thing to have.
4. Filtration is a good idea with well water.

Good luck! Let us know what you choose. Maybe give us a little site info, too.

Thanks Tom,

Pinning down the variables isn't a problem. The real question is, If I use the pressure listed on the pump for any given GPM does that work for the Static pressure input in Land FX?

Example:

1.5 hp pump delivers 35 GPM @ 150 ft of head approx. Do I use the 150 ft. head less the draw down elevation as the static pressure in Land FX, or do I use the pressure listed at the 0 GPM rating on the curve as the Static pressure 225 ft. of head in this case?

Thanks for your help.

Use the 150' of head. The 225' point is known as shut-off head, that is, the pump is working as hard as it can, but it can't push water higher than 225'. Or in other words, no flow after that point.