"Actually a two week trip for us would actually be 16 days. I would think a week in Yellowstone would be plenty enough."
I don’t think a week in Yellowstone would be plenty, I’d think of it as sort of a drive by. The park is BIG; I put 400 miles on just inside the park last trip. And it would be a shame not to visit the Tetons since its right next door. Having said that, if the future doesn’t hold longer vacation times you are stuck with limited time and long drives anywhere out west. If you made the trip at least you would get a taste of it and I’m sure want to make more trips to see everything. So I think while you have more “relaxing” options we all have to work with what we have.