I'm with a couple of others here.
#1 go to studs rather than bolts as this will make your life much easier and cleaner. Trying to align and bolt in 4 different layers while also bolting up the
oil pick-up is a huge hassle that no one needs. With the studs in place, aligning each layer becomes quite simple. I also have used rubber gaskets but have found no real difference.
#2 I also use "The Right Stuff" it's amazing but it's also quite tenacious, it'll stick to anything that touches it and it's a Biiiaaaach! to wipe off. Not like RTV at all. But if you use studs with layers of: Right Stuff/pan gasket/RS/windage tray/RS/pan gasket/RS/block and use flange nuts (or lock washers) that you DON'T tighten the snot out of I believe you'll be fine.