Lots of corners, crevices, tight spots to try and glass there. I've never had much luck with wood longevity in these situations unless each part was coated, glassed, then assembled.
Is that 1x4 going to stay as part of the permanent build? Looks like its yellow pine? If so might want to rethink that, probably won't last long. Spruce or Hickory would be better water resistant.
