The Kenda KR29 MT actually runs just a little bit bigger than the BFG KM. To answer your question, yes they will fit your JK Wrangler perfectly.
Here are some pictures of mine mounted to 17x7.5" wheels (exact same dimensions as a Jeep JK 17" wheel) so you can see how they look.
Mounted on the wheel, here are some specs:
Tread depth 18/32nds
Tread width 8.25"
Section width 10.5"
Height from ground to top of tire 31.5"
Weight of tire and wheel combined 77 lbs.
As you can see, they are a little bigger than the stock Rubicon tires. Not big enough to cause you any problems though. In fact, most people would prefer the slightly larger sizing.
I got this set mounted, balanced, free rotations, free alignment, tax included on the road for $750. That's hundreds less than the smaller BFG.