The D600, a macro lens, a Nikon ME-1 mic will get you started. I think the Nikon is already pretty good HD video camera. Use it first before investing on other video equipment. Good luck with your potential new work.
I am using this during driving and walk around, the JVC Everio GZ- V500 Slim-design HD camcorder with SD memory card. Ultra-Slim fits in a Purse,Bag and Coat Pocket. Only 3". touchscreen LCD
