Going for center lock discs, I went for the 6 bolt disc setup because there seemed to be a wider variety of offerings and I got a good deal on my BB7 which came with rotors. I bought Sram X.7 hubs which I have been very happy with.
Any shimano 8,9, and 10 speed cassettes are pretty much universal and should fit any shimano or sram freehub except for some of the newer 11 speed hubs.
Are you looking to go for skinny or fat tires on your build? I assume you are leaning twards skinny given your leaning twards 451s.
Last edited by thugpipe; 02-17-14 at 07:57 AM.