Fuel pump

IMO Get the largest fuel pump available that way you won't max out the pump as you do mods. I might be wrong but I think the the pump ratings are maximum flow rates meaning that you wont use any more gas with a 255lph than a 155lph under normal conditions. But if needed, the larger pump will out flow the smaller.
 
For the mods I saw, that pump should be great.

95 Cobra is right - with your return-style fuel system, extra fuel is sent back to the tank.

Good luck.