who's using a RRFPR?

[Pit Viper]

I'm trying to re-size my nozzles, since I've changed my turbo setup recently.
My issue is that I'm using a boost-referenced fuel pressure regulator, so I'm a little unsure on how to pick my nozzles.

I'm running the HFS-5 system, so that it injects on the fuel injector pulses, which is great since it increases injection as your fuel consumption goes up.
However, with my rrfpr, I'm increasing fuel pressure with each pound of boost, so I can increase my turbo pressure without changing my injector pulse width at all.

My fuel injectors are 680cc at 43 psi, so if I size my nozzles at 15% or so based on that, then they're not big enough when I'm running 20 psi of boost, as my injectors are flowing a heck of a lot more.

Any thoughts?