The inner sill repair is mostly done and I think it's pretty close to being in the right spot. The welding still sucks but it seems to be getting better slowly.
The next question is whether to do the floor first or finish off the outer sill. I was planning on the floor first but I'm guessing the new floor pan is a part that will take a whole heap more bashing to get it into place, so it might be better to get the sill on first to make sure the inner sill doesn't move?
I can only tell you what I did…inner first to allow the floor pan to be welded to the inner sill.
My best mate (RIP) always said for repairs whether damaged or replacement, look at how the thing was built and do the repair in the same order. I might be wrong, but to me it looked like the floor pan was welded to the inner sill then seam sealed. If you look from underneath the floor, where it joins the inner sill, it’s a seamless folded joint and I think you’d struggle to duplicate that putting the floor in first.
Speaking of the floor repair, are you replacing the outer half or the whole thing? I had one of each. The half I cut out the old one carefully and joined it on the existing lip of the chassis rail. Gave me plenty to weld to and next to nothing to clean up underneath. The full one, unpicked all the spots and cut about 1cm up on the trans tunnel second skin. Joined the rear half at the drain plug, and effectively that left me about 10cm to grind and clean up to make the repair invisible. Predrilled both repairs to do plug welds for the pan to the rails. From memory, I did the floor to inner sill last, as once it was stiff, made it easier to dolly up the join nice and tight. Might not be the right way, or the only way, but my engineer was happy with the repairs. ( I didn’t brace the body as I have a full chassis kit in place which you can see in the photo)