My friends and I did a very fun loop in Indian Peaks. We did 3 nights/4 days midweek. Saw less than 20 people until the last day (Saturday).
Day 1: Hesse Trail head -> Devils Thumb Bypass -> Diamond Lake Trail -> Camp at Diamond Lake
Day 2: Diamond Lake -> Arapahoe Pass Trail -> Over Arapahoe Pass -> Camp along Arapahoe Creek
Day 3: Camp -> High Lonesome/CDT -> Camp just pass Devils Thumb Trail at Cabin Creek
Day 4: Camp -> CDT -> King Lake Trail -> Hesse
We were going to camp at King Lake, but it was super windy and exposed. The best camp was Diamond lake, and the worst camp was along Arapahoe Creek. I would camp at Monarch lake if I were to do it again. The biggest issue with IPW is the lack of trails North to South (or vice versa), so it makes loops slightly difficult.
This book is a great resource for peak bagging, and you could definitely use it to create some loops.
Let me know if you have any questions!
http://www.amazon.com/Colorados-Indian-Peaks-Classic-Climbs/dp/1555914047/ref=asap_bc?ie=UTF8
Don't ask internet nobodies when Gerry Roach has it all laid out for you in this book!