Be careful of compatibility. First, I see in your sig that you have an IC7 coming. Second, I've heard that Buffalo maybe switching to the newer Winbond CH5 chips.
From my own experience and hearing stories from others, there are issues with CH5 memory using dividers at high fsb on the i875/865 boards.
If you plan to go beyond 260fsb and using either 5:4 or 3:2 memory divider, CH5 memory will hold you back. I have personally proven this with 3 different memory: Geil Golden Dragon pc3500, Buffalo pc3200 BH5 and Twinmos pc3200 CH5. Geil and BH5 both allowed my board to post at 301fsb with 3:2. CH5 was stuck at 274fsb with 3:2 or 5:4. No post beyond that. This was observed with my P4P800-dlx and P4C800E-dlx boards. Others have found the same exact behavior between 260-275fsb and CH5.
If you can still get the Buffalo with BH5 like mine, you'll probably do ok.