Which chipset should I go for?Which mobo for these parts?

GIGABYTE P35 DS3R and ASUS P5K-E (if u want only DDR2)
GIGABYTE P35C DS3R and ASUS P5KC (if u want both DDR2 and DDR3) ,

the first choices will OC better

GIGABYTE P35 DS3R

http://www.ncix.com/products/index [...] omoid=1078 - in canada - NCIX

http://www.ncixus.com/products/ind [...] omoid=1078 - USA - NCIX

http://www.newegg.com/Product/Prod [...] 6813128050 - USA newegg

Well the advantage to that gigabyte board is 8 sata ports not the 6 most boards have(DFI is an exception but out of budget too).

They give you the bracket to send 2 of those as e-sata ports for those who want it.

There is not wifi or firewire(was not a concern for me).

Last off P35(from any company) chips are made for FSB 1333 so even a 1066 cpu will run at this speed with little to no voltage increase(3.0 easy you can get more if you want it, 400 seems easy as well[wont keep that in air in a 30c room]. i would not go farther then that with a 9x multi.).

For Alternatives you can look at the
ASUS P5K-E/WIFI-AP - http://www.ncix.com/products/index [...] omoid=1078
or plain
ASUS P5k - http://www.ncix.com/products/index [...] omoid=1078

I have not used either of those boards. but they are in the right price range.