A couple things for you to consider.
1. Are you set on a carbon fork? Only reason I ask is you could get a Black Sheep fork that looks nice with a Moots (same finish). Sounds like James got his "issues" worked out and is on schedule with his delivery dates and actual delivery. If you are set on a carbon fork, the White Bros. Rock Solid/Origin 8/Bontrager (though I don't think Bontrager is selling their fork anymore) are good choices and from what I've read are all the same fork made in the same factory.
2. Moots won't do a EBB. Sliders only, so that's your only choice if you're going Rohloff.
3. Brakes. I'd go hydraulic. I ran Avid BB7's for a LONG time on both my YBB and my Cinco and they do work very well, but I notice after a long time descending you get some "forearm pump" like you get on rim brakes. I now run Avid Juicy Ultimates on my Cinco. I have Elixirs on another bike. Not as happy with the Elixirs as the Juicy's.
4. Is there a particular reason you'd want to go tubular on a "mountain bike" as opposed to tubeless? Just thinking that with the higher frequency of getting flats off-road, a tubular might be a P.I.T.A. With tubeless, you can run a lower pressure without as much worry of pinch flats, which is one of the big plusses of tubulars on CX bikes.
5. Finally, is there a reason you'd rather have a Mooto-X set up like this as opposed to a Psychlo built with sliders/Rohloff drops? I guess if I were to set my bike up like that, I'd personally go with a Psychlo frame/drop bars, though I don't know if there is an option for shifting with drop bars.