Some thoughts:
The one way valve seems to have a small opening, although a blow test shows no restriction (for my asthmatic old body). It would seem there is some restriction compared to a -10 line.
My Pantera is plumbed with -10. When the new, good motor goes in it will get -12.
Spinning a dry engine to start just baffles me. What does a good motor cost these days? and people start them w/ no oil pressure? Maybe there is no data to support my craziness, but I feel better w/ oil pressure - even if the engine doesn't care.
A local racer cracked his GT-350 block by spinning it w/ no ignition waiting for oil pressure. When he hit the ignition a hole was blown in the block. Truth? Dunno.
My track car has an adjustable (and GIANT) oil pressure light. When it started coming on under braking in right hand corners, I "went to the video" (my data acquistion system, cheap/funky but it works) and the truth was the car still maintained more than 30 lbs in the corner. Throttle bumped the pressure immediately.) No Accusump in this car at the time.
In summary: pre-oil? YES; Accusump? If I can; one way valve? haven't decided, but don't run one now; oil filter "bypass" ? YES
It seems the final decision would be based on your beliefs and pocketbook. YMMV