ummm, way too much money and there is no proven need, or determination as to why the jet was working but now two new jet pumps won't work for more than a few minutes... I strongly suggest another 2-3 quotes from pump guys or well drillers and plumbers that know wells.
The pumps not moving any more water after a few minutes says incomplete priming or dirt breaking loose from inside the drop pipe etc..
I've sold many Gould's pumps and I have converted a number of wells from jet pumps to submersible, what is a "restricted" Gould's pump?
And why a 120 vac instead of a 230 vac; which will use fewer meter spins to operate it?
Quality Water Associates