Some research indicated that I have enough yardage for a sleeveless top. I'm using a brioche stitch, and am pleased with the way the yarn is holding together. It is a little heavy, and I'm expecting it to stretch lengthwise. I started with the Pebble Tank as a guide, but brioche stitch needs double decreases to keep in pattern for the shaping. I'm pretty sure that I can work out the rest.
So far, I've used 2 1/2 skeins of each color. I'm feeling confident that there will be plenty of yarn to complete the project.