Finished sanding and re-coating the gussets, and installed the connective hardware in the main bulkheads.
After that it was a matter of cutting the boat in two. This took a good long time (hours). I didn't have the best saw for this, but it worked out for the most part. I got a few cuts into the tops of the bulkheads on each side. Harder to keep the blade straight there it seems. But that can all get filled, and it wasn't anything too bad.
After cutting in two, the two halves were stood on end in order to pour epoxy around the connective hardware to really bed those in place. You can see a test fit of the nesting in the last picture.