re: CONSTRUCTION - THE SIDES

Looks like fun Mike.
A quick story if I may:
This reminds me of an old Norwegian shipwright I once worked with who sold the small house that he had built and raised his family in. He had no idea how houses were built so he built it like he would build the wheelhouse on a boat with yellow cedar studs and half lapped in diagonals, etc. the new owners of course wanted a bigger house but when they got a bulldozer in to demolish it, it would not break. The dozer literally pushed it around the yard for a while before they brought in an excavator with hydraulic jaws to “chew it into bite size pieces”. It took a long time.
I suspect your bar-b-q shed will be equally tough. :-)