i keep a KISS ( Keep It Stupid Simple) rule for my installation.
That because i am away from my home for long periods so my wife must be capble to see the problem.
in my setup if the filter is dirt the flow out of the water tap drops so my wife can easly see the filter if it is not dirty but the pump is running whit low pressure i told here to plug out the main pump and plug in the spare pump. all mechnical connected only the electrical plug must be changed.
A pressure switch is protecting the pump and yes i have a current moitoring on the pump. but as a engineer i avoid any filter or restriction for any pump.
Greetings from Greece