Yer spose that could be done ww, just sounds alot of messing around
Reading the details of the one pole man listed it looks like that one could work with a booster pump as it says on the details of gardiners website :
Float valve with Electric cut-off switch
Compact dual float-Valve stops water on product side of a RO system or water filter. This valve has the added benefit of having a micro switch that can on or off a device (booster pump) when either the storage tank is empty or full.
Am just un sure whats best never done any of this before lol.