I think it might be a pain to get to the Run (Dual) Capacitor in the future, since you have little room on a heavy duty pressure switch and when you have heavy gauged wire.
(1/2hp Thru 1-1/2hp - 3 Wire Pumps)
https://www.merrillmfg.com/product/merrill-pressure-switches
http://www.nationaldriller.com/articles/90363-merrill-manufacturing-control-switch
(1/2hp Thru 1-1/2hp - 3 Wire Pumps)
https://www.merrillmfg.com/product/merrill-pressure-switches
http://www.nationaldriller.com/articles/90363-merrill-manufacturing-control-switch