Thanks for the input guys , here's some more info

1) Yes, I had a wheelset built w/ front disc and rear rim brakes when I switched over (before I was brave enough to make my own wheels!). Now I have my old commuters and my old lightweight weekend wheels, and figured I repurpose them
2) The hub I'm considering is this one http://www.ebay.com/itm/Cannondale-W...59521207464921
the picture makes it look like the large flange spoke holes are further out than the short ones, am I mistaken? At any rate if it's a minor improvement I'll go with the one w/ two large flanges and keep it simple.
3) Thanks for the comments on reusing spokes, if I go with that large flange hub I'll be using new spokes for sure. Thanks also for the 2.3mm spoke idea I'll be sure to use those.