Leave Nikon .. buy Canon D60 .. This is a kicking ass camera PLUS if you are going to make video then you will able to buy Canon XL1S which is VERY good camera and you will able to use on it photo lens!!!
Regarding the lens.. whatever you buy at the end Nikon or Canon go for 2.8 lens with 16-35 mm and 4.0 70-200 .. if you want more then also buy 28-70 2.8 .
But again think twice about Canon.
Related links:
http://www.canondv.com/xl1s/
http://www.canoneos.com/d60/index.html