@ALB your post cracked me up. I can't wait to see this Mitch guy.
I actually do see myself doing more of the around town zipping around. When I had my MG, I rarely took it on the interstate. Avoided it like the plague as there are lots of country roads around here to get where I need to go. The MG had big rpm drops especially between 2nd and 3rd. It was a real drag and made climbing hills a challenge. I was either revving too high in 2nd or lugging in 3rd. I've got a brand new engine to break in and based on what I was reading lugging it should be avoided.
The 4.12 sounds like a good option for me. I've read that using a .82 4th gear along with the 4.12 makes for a nice highway cruiser, but would want to make sure it's not too big of an rpm drop from 3rd.
I need to decide on tire size, was thinking standard 356 whatever that is. Then run all the rpm/mph numbers.