As far as the mountain flying opportunities there, Bristow (HAI) had a mountain course when I was there. Took 4-5 s300cb's to Reno for 4 days. It was awesome and a great experience. May want to see if they still offer that. Other than that, the things you have done are the things I would say to do generally. You could always do the typical thing...figure out what airports in the area ave a decent restaurant and sightsee on the way to lunch.
Try to get on the mountain course, it's a great experience.
Good luck John