I'd say get the CPU now. These sales only come once or twice a year if that. And I haven't checked, but doesn't Microcenter usually do bonus discounts when you bundle a MB with the CPU?
Anyway, you should get it. You'll need the extra horsepower to run the latest bundled 2D retro indie games.
They do offer a discount when you buy a MB too... Seem to be 30 bucks off or 20% (as it was a 149 and now its 119)
Anyhow, I got approval to order!
CPU and MB for 347 after tax... That seems really insane.