Only if you have the time to spare and if it's open. It is quite spectacular. If you can add a 9th day, I'd recommend it highly!

It would take you about 4 hours to get from Burlington to Estes Park, so you would probably want to spend the night in Granby, and I'd probably recommend calling ahead to see what's open. Granby to Montrose via GJ is easy in 1 day, you could even make it to Durango as long as you don't dilly-dally too much along 550. Ouray and Silverton both have motels and B&B's.