You don't need to touch your fuel pressure regulator with a fuel pump that flows more fuel. Just as Vernon said.
The fuel pumps are not rated for pressure, their rated for flow. Our stuck fuel pressure regulator will ensure that the excess flow does not create any excess pressure. It does that by allowing the flow to bypass into the fuel return line once the appropriate pressure is achieved in the fuel rail. All you do is move more fuel through the feed and return line.
The need for these higher flow fuel pumps is as you add components that allow increased air flow, increased fuel is necessary. Increased fuel is achived by the ECM increasing the fuel injector pulse width. (the amount of time each injector is open to inject fuel) With a stock fuel pump, it's easy to bolt on enhancements that can overwhelm the capability to build sufficient pressure due to such increased pulse widths. The fuel pump you purchased, is really only necessary when you start putting larger fuel injectors in the car. The stock fuel injectors, even at 100% duty cycle can't out-flow that new fuel pump.
You can bet with the work you intend to do, you'll eventually need to upgrade your injectors.