That's awesome! I think you'll really enjoy the trails there and the park itself. Admittedly, my personal experience with the MTB trails is pretty limited thus far, but everyone raves about them. I've spent a lot of time hiking the park over the years, and the trails are great for both hiking and trail running, too.
If DH and I end up out there during your stay, maybe we can hook up. If you need any other information about the area, just let me know. Nashville can be a bit much when its crowded, but it's not a bad little tourist town. Plus, there's an awesome ice cream shop there! Bloomington and Columbus are both fairly short drives away, too, if you'd like a break from the park.
Live with intention. Walk to the edge. Listen hard. Practice wellness. Play with abandon. Laugh. Choose with no regret. Continue to learn. Appreciate your friends. Do what you love. Live as if this is all there is.
--Mary Anne Radmacher