Personally I would stay up towards the mountains(summit county) more if I were you. Buffalo creek is a must ride if your in colorado. If you want great views, you could either hike or bike centenial cone. It is an awesome trail. There is also some good rides and great places to see out by breckenridge or if you really want to get out west, hit Glenwood Springs. Hope your trip goes good, gaurentee you’ll love CO!