Trueform useless, leave it off.
Vsync off will give you smoother gameplay than with it on.
AA should be left off, because you are already playing at a high resolution. The addition of AA will make more of an impact on performance than IQ.
AF should be set to 8x.
This is what I would do, in fact that is what my 9700 Pro is set at, although I don't have and LCD screen. Good luck playing at that res with a good framerate though.