If you are going to overclock, you are going to need a CPU fan. Get the Cooler Master Hyper 212 EVO or the Noctua NH-D14 depending on how flexible your budget is.
And I would go for a single 7950 or 7970 instead of the 2 7870's you have there.
Should fit in the case.
why would you get a 7950 when 2 7870s preform way better >.> ?
and yes i'm getting the evo..but i'm afraid that my ram will block it, the vengeance rams have really long heat sinks.