Thanks guys.. I need 7 more segments. (3.5 doubled)

I'm thinking DEN-ORD ORD-IAD IAD-LGA (spent a night in NYC) and come back LGA-NYC..

I'm new to the whole segmant run...I'd be willing to essentially go in a 'circle' around the midwest one day picking up 4 segments... any ideas for cheap stuff starting out of DEN? Thinking Dec 10th or 11th...although I've got from the 8th-14th free...