The pulsator is how the original was set up from the factory.
The hotwire kit can be installed without cutting and splicing and it ensures a full 13-14 volts makes it back to the pump. The original wire is pretty thin and resistance can increase with age and prematurely kill a pump.
As much as you would like to keep originality it would hardly be considered molested if you upgraded pump which no one would see unless they removed the gas tank. The pressure is regulated by the fuel pressure regulator and shouldn't be an issue unless you bought a mega high volume pump, and you would probably easily recognize a high volume it was because it would be more expensive.