[Rudy4]

I don't like drooping wire to the output jack. It looks fine here but you don't know where it's going to end up as the instrument is played.

When I install SBT pickups I give the output jack a couple of turns while watching it with a mirror. The cable always curls up against itself so there's no loose loop.

Just one thought.

I also see cleats already on the soundboard. Those areas deserve a closer look where the soundboard grain intersects with the braces. That's some rough brace work!

Even if relief is good it's worth tightening the truss rod a bit as a form of troubleshooting. Does the "nature" of the buzz change after tightening the rod?