I'm fairly certain that the cam only gets oil from the pump at start up when the engine is cold and pressure is high, once the oil warms up and pressure reduces [and the PRV closes], the only oil the camshaft gets is what is in the trough and what gets flung off the big ends. While marginal, it is obviously sufficient.
As for setting up the clutch, assemble it with the nuts level with the threads as a starting point, but the main thing is to ensure that the plate lifts squarely or it will drag and crunch the box. So before you fit the primary chain, fit the cable etc and try the lever, you will see visually if it lifts square or not, if it doesn't adjust the nuts till it does then assemble and test ride. If it slips, turn the nuts in a coule of threads - making sure its still lifting squarely and test again.
I fitted an SRM pressure plate and springs, it's now as light as a japanese clutch.