Durga said:
Dave is the bomb - but his build skills carry a premium that I don't think I can afford
Any other suggestions?
first off, a quick question (or two)...where ya getting the mustang discs? and, do you have them in hand?? how much do they weigh???
as for lacing, i am 175 with gear, ride a mostly rigid 9er and use 32h 14/15g double butted spokes. the wheels are laced 3x by yours truely (my third wheel build and they've been beautiful!!!

)
for you, it's important to know what type of terrain you ride, or where you ride. i think 32h f and r 3x is a bombproof way to go. if you ride smooth and want something ultralight, 28h is good.
as for hubs, though you did not ask for advice here...i'd stay away from the am classic stuff. i was ready to spring for a new 05 hubset and then spoke to a vendor who sells alot of am classic stuff. he flat out stop selling the mtb hubsets because 5 of 6 customers with the new 05 hubsets had bearings had crap out REALLY quick. not 1 or 2 out of 6, but 5 out of 6...something to think about.
also, i am not sure what am classic is smoking, but the hub flanges on the new 05 hubs are ridiculously closely spaced.
i am looking at dyads (pretty light in silver, at about 480g) or the mustang (posted as 460g on speedgoat, is that right?) and lacing them to the new hope hubs (the pro II model). the new pro 2 is supposedly 160g f and 260g rear and the price is right around the range of the bulb hubset. that will work for me!!!
for lacing, try to have them laced by who you are buying them from. i know speedgoat sells the mustang dis rims and the am classic hubs.
otherwise, guys like larry mettler at mtnhighcyclery and mike g. at oddsandendos can build a mean set of wheels for a relatively good price.