No offense, but you're going the wrong route here........
If you want to get a good overclock, you don't need the Striker and you don't need 680i. Get a motherboard that you like, or has the features you want, and you'll easily find a board that also OC's very well.
Second, if you want really high clocks, then get the 6400 or 6600 for the money because of the higher multiplier and binning. This then leads to my next point......
You don't need the Titanium.....waste of money. If you go with a CPU with a higher multi, then your RAM won't be pushed as hard @ 1:1 when OC'ing. Regardless, there are also much better choices than the Titanium.
Next, what cooling will you be using? No sense in push for these clocks if you don't have great cooling. If you go air, that's fine, but you'll be limited alot sooner.
So....you're a bit off-base. You don't need some $400 mobo or whatever to get a high FSB and OC'ing. Any 965 board will get you there with decent RAM and cooling, and a 6600 CPU.
So, a MUCH CHEAPER option would be:
-Gigabtye 965P-DS3
-Corsair Dominator
-6400 or 6600
-Tuniq Tower HSF
If you wanna blow money, then:
-EVGA 680i
-Team Xtreem RAM (take your pick, they all have Micron D9's chips, so just pick a speed)
-6600
-liquid cooling
Difference between the 2 options? Bragging rights. 😉