submersible pumps

Need to replace my submersible well water pump what size pump do I need? Well Depth 120ft, Casing Depth 82ft, Static Water 50, Diameter 4" looking for a good 1hp that will easily do like 20 gpm any recommendations please

I placed a new 3-wire pump into metal well case. (The pump controller is inside the mechanical room in the house.) The broken cast iron well seal was replaced with a PVC well seal. There is no conductive (bonding) between all the well components (galv drop pipe, iron well casing, metal junction...