Applied math programs where you get freer reign

[Pointpizza]

I already know what research I want to work on, Ive actually already started.

I want to go to a program where I can work with people from whatever departments I want (especially econ math and sociology) and wont be bothered by people in my department trying to get me to work on certain types of projects. I also would prefer less coursework required if possible.

Any ideas?