If your house has the pressure the 1” connection could be doable still. Have to make/buy a pressure gauge to fit on a hose bibb and run some other fixtures in your house to see what happens. Short burst of water from the valve would only really be noticeable if you were in the shower. As others have mentioned this could be a lot of rework depending where you upsize your water to and probably would need a water hammer arrestor for the toilet too.