I'd say too ambitious. It would be like adding a road trip onto a road trip to get to Chattanooga. :look But I've done it, and it's pretty freaking beautiful up there. :D
Please note that the above date is just a wish of mine, and not official in any sense. Didn't intend to mislead anyone! Mathei is a different story though. :P
Chattanooga isn't nearly as gaudy as the Pigeon Forge/Gatlinburg tourist trap location. :lol I'm personally hoping Fall Ball lands the weekend of Oktoberfest, because that's super fun to attend. It would be great to share that with people on their trip here. :) It's October 22-23, 2011.
But...
Your list has a few faults. Let me revise it for you!
1) Meet Erin.
2) Meet Erin.
3) See other Tower folks.
4) Visit TN>
5) Ooh and ahh over wherever Cherie Priest used to live.
6) Meet Erin.
:geek