Thanks for all this [MENTION=354412]BCDrums[/MENTION], I really appreciate the input. I actually bought the parts because I had a very specific idea of what I wanted, and because the parts I wanted were much cheaper coming from Germany, even with $40 for shipping. I've emailed a bit with John at Woody's now, but it sounds like he doesn't like using parts he hasn't sold himself in case they fail (which is understandable), so I'm seeing how I can convince him

They'll do it at Wheelworks but it's quite expensive, Mooney doesn't build any of the wheels himself, and again I unfortunately don't really trust them so much, too many very young, inexperienced people being put to tasks that take real know-how. I can see how it could be very hit-and-miss.
The other place I have in mind is Somervelo, I really like the guy who runs the place and he seems very competent. Can anyone speak to a good wheelbuilding experience from Somervelo?
Thanks very much again to all!