buffalo tech,V-data,twinmos.

hey all.
have bought a new cpu, a 2.8c p4 to replace the celeron d im using at the moment. naturally i wana overclock bt im gna need some capable ddr400 to even get the damn thing to run at stock let alone overclocked!
the ram i've got access to is:
512mb v-data-pc3200-rated at 3.4.4.8 runs at 2.5.3.3.6 at ddr400 been up to about 217mhz at stock volts and 2.5.3.3.6
512mb twinmos-pc2100-rated at 2.5.3.3.6-runs at 2.5.3.3.6 at 180mhz at stock volts
2x512mb buffalo tech/infineon-pc3200-rated at 3.3.3.6. ran at 225mhz at 2.8v at 2.5.3.3.6
first of all....
which combination of sticks would be ideal for overclocking? im guessing buffalo tech?
also, would it kill my overclock if i used all 4 dimms or all 3?(minus twinmos)
what would be advantages to me of using 2gb/1.5gb?
also, what would be a safe max voltage for the dimms?board goes up to about 3v i think.
thnx.

most guys do just fine with a gig..i would run the 2x512 buffalo ,forget the rest.the twinmoss is just too slow. the vdaya will limit ur oc and u may have probs runnin 3 stix.. most 2.8's will run between 3.3 mhz and beyond 3.5 mhz. first thing is find out how fast the cpu will run. if it is a fast one(fsb highr than the memory will oc at 1-1), 3.4 -3.5 then run ur memory ratio at 5/4 and try to get the lowest latencies.. if the 2.8 doesnt run well, then just run the buffalo at 1-1 with lowest latencies.