stage 1 complete:

Just a few alterations from the original design: I doubled up the woofer baffle for stability and to allow me to alter the shape of the sides while still maintaing a good seal. I also shortened the length of the woofer back boxes to save a little space. Obviously, I changed the shape of the coax baffle to meet my design goals.
Wow, these are going to be heavy. That's a lot of MDF.
Next steps are getting these filled and smoothed out for paint. The edges went together well, but there are still a few areas that need some filler and sanding.
I'm also tracking down material for the side panels.