I think the most I've ever bought at one time was 12 yards for my Patriotic quilt because that was totally planned, fabric figured up and bought specifically for it.
I can hardly wait!
I got a lot of blues and beige/whites with blues and I am thinking of something very simple with big pieces to show the pretty fabric. I have a pattern called 4-Square Fun that I did in CW repros for my brother and it was very quick to do.