In a previous life, I built a whole lot of 1000+ hp engines. While to the naked eye, after a month your parts will be oil free, they really aren't. Oil is embedded in the pores and is still a film on the bearing surfaces, journals, cam, etc. Within 2 revs of the motor, the pickup will be filled and by the next you'll be pressurizing the oil passages. It's always best to pre-lube the engine under pressure. You can overcomplicate and obsess about too many things. Fill it up, crank it up.