Cyclocross. But use it for downhill and tirals.
Actually a kid told me the other day he thought 'cross bikes were really cool, and wanted to get one to do trials on because "that would be sweet dude." I gave him a very, very admonishing look.
You should kick him.
Also, build a Carver-style rigid steel fixie to be mega-trendy.
On a serious note, a 6-7" rig sounds nice, but I don't know which how much travel. 6" sounds to little, but 7" sounds like a lot to climb with.....