Call Kasse. He is "the man" when it comes to these 385 series engines. His pump will easily support your build. With his pump, my
oil pressure is about 80+ on cold start up. Runs at 65 when warm and under load, and 45 at warm idle. Rock solid the whole time. My stock Ford pump used to dip to 15 or 20 at warm idle - not good. I have tracked my car before and driven it to the limit several times and have never had a problem with dropping pressure as described. For the pan, I'm sure there's better pans out there, but I doubt there's a better pump for these engines. As for Accusump, always a nice addition if you have the room. A great safety feature in case of a failure.
But, don't believe me - call the man himself.