you will need liquid teflon thread sealer for the lower short studs in the block and use moly lube for the uppers.
I was going to use moly lube on the nuts and washers. Just didnt know about the block side. Going to chase the threads to clean out the holes to be sure the studs go all the way in.
your right on track, i used the same method
a lube or sealer isn't required on the block side
maybe think about replacing the manifold bolts -intake-