I'm planning on bending some sheetmetal, tracing the edges, cutting out the offending portion, and welding in the new piece.
Do I need to brace the doors if cutting only the outer longs?
I also plan on loosing the jack posts and "shaving" the jack post holes.

Right side

I would...just to be on the safe side.

once you have the welder, making the brace is a walk in the park.

b