Yeah, fuel system is pretty loaded there... Port injection is really dragging the LPFP down, the problem with getting better flow out of the LPFP and leaning on the port injection to take up the fuel demand slack is that you're losing out on the power that you'd otherwise gain from pure DI, but then that's already far over taxed as well (already seeing nearly 1000PSI HP actual) and better LP pump isn't going to fix that.
You didn't log it there, but what does the actual lambda look like, is it actually holding commanded lambda?