My Build, Please Help

Here's my build, items marked with * are basically set in stone.

*Case: $60
http://www.newegg.com/Product/Produc...82E16811144260
*PSU: $90
http://www.newegg.com/Product/Produc...82E16817139005
*HDD: $60
http://www.newegg.com/Product/Produc...82E16822136320
*GPU: $160
http://www.newegg.com/Product/Produc...82E16814130591
*Memory: $50
http://www.newegg.com/Product/Produc...82E16820231277
*DVD Drive: $17
http://www.newegg.com/Product/Produc...82E16820231277
*OS: Win 7 64 bit $100

Now, here's where I'm need help:
CPU: $210
http://www.newegg.com/Product/Produc...82E16819115067
Mobo: $120
http://www.newegg.com/Product/Produc...82E16813128425

Total: $870 ish

Seeing that Sandy Bridge is being released again on Monday, and I don't plan on ordering before then, should I just wait until then and go with the i5 2500k?
Also, I know that the Mobo will change if I do go with Sandy Bridge, but are the current Mobo and CPU I have decent?
I'm trying not to spend too much more on this, maybe with the exception of interchanging Sandy Bridge. Any of these items I have listed for cheaper prices are appreciated.