I want to put water tanks about 100m from a house and pump from the tanks. Problem will be lag between turning a tap on and having the pressure I am told.

I am looking at putting in a Greenline PE100 63mm OD pipe (57 ID) between the pump and house and a large pressure tank near the house with a pressure limiting valve from the 63mm pipe to say 20mm into the house. If I set the pressure valve to say 300KPA and have the pump start at say 350KPA and turn off at 500KPA, would this give a constant pressure at the house?

Is 300KPA ok for house pressure?

Plumber wants to put in a second smaller tank closer to the house, which would work, but means 2 pumps, although the one feeding the small tank could be smallish as its just running into a float valve setup. Not keen multiple pumps and stop cock setup.

Any advice most appreciated.