Wow you're really going at it!
I know its too late but E6000 (glue) works great for piecing back together a body, its incredibly strong. Magnets can also be use to clamp the pieces together while the glue sets.
At first I though about glueing it together, but I was hesitant of how strong it would be and how the glue would react with the paint. The paint I can cover it with some 3d carbon sticker, but the first place it would hit if it tumbles would be the roof.
But that's a good tip. Food for thought for future projects "thumbsup"