For anything other than a strip car (straight line), a surge tank is needed if the owner doesn’t want to keep the tank full.I have wanted to do the same, I was the tank to be centered and a little larger. Only issue I have found is that there isn't any options for higher hp stuff unless you just run a surge tank with a couple pumps in it.
I’ve ran my sumped tank virtually empty on the street (put 16 gallons in it when filling). But I’m not doing any autcrossing of any type. And when at home and going to cruise in’s I rarely if ever have less than a half tank. I will run the motor out of gas doing a donut around 1/4 tank.
Regarding the Hellcat pumps - to hell with them haha. I’d put in a 450, dual or triple 450’s before I’d use a 525. 525’s take a lot of amps.