An acquaintance of mine has taken a 4-month sabbatical from work to fulfill one of those goals that won't go away.
I met him a few years ago when he wanted to look at buying an RV, but he finally settled on a Husky.
You can read and see all about it on his blog, which is an online chronicle of taking a two-week mountain flying course, followed by visiting every back-country airstrip he can find. If I remember correctly, he's targeting Montana, Wyoming, and Idaho.
It's worth a look, and might be a nice addition to this thread:
http://mccrank.net/blog/