I am 5'2.5" and have 29" inseam and ride a 29er. Specialized's 29er is a 15.5", which is perfect for me. They don't corner/take switchbacks as nimbly as a 26er but their advantages far outweigh the disadvantages IMO. Even with the tight cornering and size 9 feet I have never been able to have toe overlap.
Amanda
2011 Specialized Epic Comp 29er | Specialized Phenom | "Marie Laveau"
2007 Cannondale Synapse Carbon Road | Selle Italia Lady Gel Flow | "Miranda"
You don't have to be great to get started, but you do have to get started to be great. -Lee J. Colan