Beautiful guitar Michael! Dreadnought shape? And what about this bridge? Custom shape?

And do you use a bigger shape for longer scale? What are your considerations on size vs scale?

My third guitar also was a baritone. The main suggestion I have, based on my experience, is that you play on baritones with different strings and scales before you construct one. The experience would be very valuable. This didn't occur to me before I build one, but I was new to building at that point. It may be hard to find baritones to play. There's a reason for this (more below).

I used a 28 1/4 scale and medium strings. The long scale wasn't a problem (though I have large hands, and play the guitar in classical position, which facilitates big reaches. I found the mediums so difficult to play on that I switched out to light gauge strings. I was surprised to find that they sound better, to my ear. The string compensation changed radically, but fortunately I had designed the bridge using moveable saddles, so I could adapt to the new strings, barely.

Quality of tone is largely subjective. In my personal opinion, the reason baritone guitars are relatively rare is that they don't work as well overall as conventionally tuned guitars. The conventions of how high and low a conventional guitar goes weren't established arbitrarily--they reflect a lot of trial and error. I'm glad I have my baritone because it's a nice option to have in a 2-guitar jam, but it's not what I like to play on every day. YMMV.