You have to do some serious thinking about it.. but I would say "just do it" if you think you want to.. I did a body swap onto a different frame now im going to be swapping the other frame in within the next year probably. If you have the time and the space and the parts, you cant put on a price on what you will learn by taking it all apart and building it back up.

1991 Trooper 2.8, 5spd - waiting for a different frame and tranny
1992 Rodeo 3.1, 5 spd - 1 inch between me and the headliner