[turp mcspray]

I welded a couple pieces of 3/4" tubing from the windshield posts to the floor behind the front seats. Nothing too serious. Before it goes on the rotis I will probably add some more. I would do all of your rocker box work with the top in place. That way you know everything is where it should be. Whatever you do for bracing, I would recomend that you can still put the doors back on to check things such as gaps etc. You could make some bolt in bracing that goes from the hinge area to the striker in the jamb, but that wouldn't allow you to install the doors. Does that make any sense?
As long as the body isn't being twisted around, you shouldn't need a lot of bracing. I very seldom brace anything, other than convertibles on the rotisery. Just don't do any structural replacement (1/4 panels, rocker panels, etc.) with the body in a stressed type of situation, such as on the rotisery or with the vehicle sitting on jack stands somewhere besides the suspension. I've been doing this a long time, so what I may see as a simple job may scare you to death. LOL! If I can be of any help don't hesitate to ask. One thing about having lots of experiance, it not only means you've done a lot. It also means you've screwed up a lot of stuff and learned how to fix it and not do it again!