I think I stole that build of yours and I too kept looking at it on my copy-blaster going "WTF?"
OK, so "it's a Ninja Run that I can use a power choice on" is fine I guess if you like that sort of thing, although I feel (again "personally" I guess) that the joy of Ninja Run is a I don't HAVE to use a power choice for it, nor throw slots on it to make it useful, but... *shrug*