It's kind of late now, unless you plan more projects, but my ridged wet saw has a plastic shield that swings down to cover the blade, keeps things pretty neat and dry all considered. You might be able to rig up one using service parts from another brand from what you've got to keep your blade from slinging water everywhere.
Other than that, looking good!
This kinda reminds me of when I bought a miter saw to do deck boards. As soon as I made my first cut I immediately realized how much asspain it would have saved building the shed that I built with a Skilsaw and a jigsaw. Cost would have been a drop in the bucket too.