if anything do some searching about robello engines. I saw online quite some time ago, and a customer had listed the bearing sizings and clearances/tolerances on the motor. considering the 8,000+ rpm levels the robello engine spun too. i'd look into that direction. Aside from going accusump, and getting a crankscraper/windage tray not much else you can do for oil control without getting into coatings and enlarging oil passages.

For cooling. get the system properly ducted. From the bottom, sides, and top. An oil cooler is a must, if you are tracking it for more then 3-4 laps w/o a cooler you are just not thinking properly. If you can run a cam do it. They really wake up the mid/top end on these motors.