I got a White industries crank, partly because I didn't trip over a 175mm bmx crank. Another option are things like a sugino messenger. One thing about the triples is that they can run a chain ringguard. something is useful since the chain will be on the "outer" ring all the time.

I would question a 700c wheel for your use, though it will certainly work. Rohloff seems a better match for a 26" wheel. Basic issue is what size of low gear you need. Best case you already know. Then go to:

http://sheldonbrown.com/gears/internal.html

dial in your numbers and get your low gear. The rest just falls in place.