I'm running the DW300+ pump with DW1300 injectors, and it's fine for about 21psi on my 35R setup. It does want to drop off in voltage on the higher end though (known issue with these pumps). Some guys run a relay, some guys opt for a surge tank with another pump.
I was around 419awhp on pump gas and 502awhp on C16. So the pump can do it