I never liked any of the WSD mountain bikes, a regular Kona fits just fine. Kona makes frames down to 13" in size, that may be a line to look at but I don't know if they make anything other than true mountain bikes.

As for Cannondales, be careful as they are built out off all sorts of proprietary parts and technology, you can't up grade or switch out parts very easily ( shops need specail cannoondale tools)

penny