Sweet overclock, but for the ram situation you should not worry so much about your final overclock but FAR more importantly on how high you can get the Northbridge speed stable.
Once you do that you will see your numbers shoot through the roof with those clocks. Try something simple even like raising the northbridge multiplier to 12x instead of the default 10x and you should get 2.4Ghz without any effort at all. That will dramatically enhance your performance especially in memory intensive programs/bench's.
Very nice combe so far either way.