I second Onebyone and mck. It's probably too late to get them to the long arm quilter and back by Christmas. Most Three Yard Quilts are fast and easy. I suggest you choose one of her patterns with larger pieces. Use a batting with scrim, like warm and natural. That way, the quilting can be as far as 10" apart and won't take forever. As Tartan suggested, I would do them in different colorways to reduce confusion.
I made Roman Holiday from the Quick as a Wink booklet. It was fast and easy. I would suggest you buy a little more of the fabric you will use for binding, as her bindings are just a single fold binding and I prefer the double fold.
It can be done, but I hope you're retired, as it will take lots of time to do.
bkay