Don't order ANYTHING if you're waiting for P67 MOBO. You want to make certain that the RAM is compatible per MOBO; the 4GB sticks especially - to a lesser degree the 2GB sticks. I've noticed that DDR3 RAM has been dropping in price; some high quality Corsair has dropped as much as 25% in the past week.
I've seen some P67 MOBOs listed for sale e.g. P8P67 PRO http://www.buy.com/prod/p8p67-pro-atx-intel-p67-socket-1155-ddr3-sdram/q/sellerid/14369784/loc/111/219183025.html
Obviously, the LGA 1155 socket is NOT compatible with the LGA 1156 CPUs.
I 'wish' Intel would, they could, have better reverse compatibility like the AM3 socket...but it's always something to wish for none the less.