Need suggestions for lenses & tripods

I will be working on multiple short film projects soon, I need help to choose the lens (and quite possibly a good slr or video camera [body] under $1000).
I am using a Nikon D3100 right now, with 18-135mm and 18-105mm lens.

I need a wide angle, macro lens.
Any suggestions?

or should I just get rid of this camera and get something better under a $1000?

I need a good fluid tripod and a cheap dolly too.

I would be glad if any one could help.

Thanks.