If you are new to building and overclocking, get the Epox. (It's a good board, if you know what you are doing or not, but will simply be easier to deal with if you are new to this stuff.)
Get the 144 and save some bucks. A 146 won't clock any higher, since the new single core opties all top out around 2.7-2.9g anyway.
Either the Epox or DFI will do 300HTT, so you're pretty much set for 2.7 gig.
Get the GSKILL 2 x 1 gig DDR500 3-4-4-8 kit ($150) , set mem divider to 133 or 166, set HTT multiplier to x3 and crank it up to 300FSB or more, and you are set. for FX 57+ speeds.