For anyone that happens to be following along from my question/discussion a few posts back, I decided that grabbing a Capsule was the path of least resistance for my new dual-power case.
So, here is what I ended up with:
Very similar to the other case I built, above, but instead of the Malekko Power I am using the Capsule plus a 12v distribution block that Dubpixel had pointed out a while back. (Haven’t plugged everything in yet, but seems to all be working thus far after testing with a few individual modules.)
And I decided I didn’t want to give Synthrotek any more of my money, so the person who helped me put this together just cut a little panel for a power inlet and switch.