Sounds good, I'd do it in a heartbeat!
Some extra gas will probably be needed. I've driven old trucks through most of those places. First my 52 1 ton back in 2004 and later a 61 one ton ford with a Detroit. No real issues with either, nothing that couldn't be fixed in a few hours at the most.
The most important thing I did to make for a successful trip was not to plan any stops down to the hour or even day. You'll have a lot more fun and less stress if you plan your stops but don't put a time or day on them, keep it as low key as you can, you'll get there when you can. Sure you might make them all as you want to but not having to worry about it makes a difference.
Grigg
