#3 or #4 AN will both work well as long as you restrict the oil flow to the shafts between .030 to .080 up
Is this a roller cam motor or flat tappet?
The reason I'm asking is the roller cam springs like and need a lot more oil flow to keep them cool than the flat tappet springs need shruggy

Mr.Cab Racing and winning with Mopars since 1964. (Old F--t, Huh)