I decided to go a little overkill out of convenience and good fortune. I bought 5 matching aftermarket wheels and put all of the stock Willys MTs on them. Then I had a spare tire from my JK, that was conveniently the same size as the stock Willys tires, mounted to the steelie spare. So I have a usable spare that I hopefully never have to use. But then I have my “nice” aftermarket wheel+tire in the garage so doing a 5 tire rotation won’t require me to drop the spare from under the truck. When I move to 35s this plan probably won’t jive-but I’ll worry about that when the time comes.