I have a VERY similar setup and currently have my Q6600 @ 3.6 with 9 x 400 FSB, voltage set in BIOS @ 1.39
I also had to up my RAM voltage from 1.8 to 1.9 but that's normal. i have DDR2-800 RAM so with the 400 FSB setting, i'm sitting at a nice 1:1 ratio.
Any other changes i made were simple ones like disabling speedstep & C1E support, otherwise, what i have stated above is what i have done..
My temps at the above settings are 62 degrees @ load temperatures but usually average out @ 55, Idel temps are in the low 30's
Now, i tried to up the FSB a little in an attempt to hit 3.8 or higher and i found that i had to increase my voltage to 1.44 or higher and the temps went up o just shy of 70 degrees so i backed it down to 3.6 where i am very happy.
The only temps i monitor are the individual core temps for my CPU and my video card.
Core0
Core1
Core2
Core3