Went back in the garage and did a little bit more today.
My wife helped me remove the door. While I was waiting for her I started working on welding the second hole I cut out of the bed side. Decided to finish it up. Needs a couple of tiny welds to fill a few spots and I need to finish grinding it (I hate grinding because I suck at it).
Then I drilled some holes on the cowl panel. There probably should be a gap underneath it (?), but there's not much I can do about it now. I'll do the 7 spot welds and cram Seam Sealer under it and it will have too do.
Tomorrow I will spot weld the cowl panel, put the rocker panel in place with screws, and start welding it up.
I suck at grinding more than I suck at welding.
You can see the gap from the shadows. Not huge, but it's there. Whatever.