Carlos, The reason I don't like the rafter to rafter connection is because it seems weak in the face of strong winds. I have no engineering degree or anything like that. But it seems that if you could take two scenarios. One being the Sobon Shed you have pictured and the other a frame with kingpost, principal rafter, and ridge. The second having bracing running from kingpost to ridge. If one of those storms came I would "feel" safer under the one that has bracing.
I hear you on the sun and shade thing. My mother never turned on the AC until it reached 95 degrees F with a 90% Humidity. Had to learn how to open the proper windows just enough to create wind tunnels. Combined with shade and you can manage.
