depands on the area and lighting i guess... better ask some pro here i am not too good either hehe..
can use auto mode and see how it perform.. maybe shot something with combinition of colors, distance etc
sent me 1600, i will resample it and post it up.. keeping the original to be uploaded too but not directly displayed in the forum, so those wants to see it at 1600 can click it rather then forcing them to see it.