YES YES YES!!!! i love this concept..

I am going to add one minor thing though..

onyl smiting once per day per class level seems a bit underwhelming to a class that is built around smiting the CRAP out of his enemies!

id at least allow him an addtional numer fo times.. maybe equal to hconsitution modifier as I would assume smitiing would take a lot out of somebody.

my favoreitre ability of all is Disorienting smite.. daze? yes please!