Get a 29er SS with disk brakes. This will work:
http://store.somafab.com/somajuice.html
Tange Prestige heat-treated CrMo front triangle; butted CrMo rear end
• Geometry designed to accomadate a 80mm travel fork
• Bent top tube adds standover clearance lost with the larger wheels
• Int'l disc brake tabs and canti bosses
• Laser cut horizontal dropouts w/ derailleur hanger
• S-bend seatstays and chainstays
• Headtube gusset
• Dropout spacing of 132.5mm will accomodate MTB (135mm) or road hubs (130mm), in case you want to throw a set of road/cross wheels on.
• IRD Rigid CrMo 29er fork available as an option
• 1-1/8" size headtube
• 27.2mm post size
• 73mm bottom bracket shell
• Colors: Spice Red or Midnight Silver • Wt: 5.05 lbs. (16")
• Sizes: M(16"), L(18"), XL(20") (Center to top)