Well, I got the cabinet. It seems structurally solid, but definitely ridden hard and put away wet many, many nights. The biggest area of concern is the bottom. It's missing chunks of several layers of the plywood. I figure that if I find someone who's good at woodworking, it can be repaired nicely, or, at the very least, painted with some really tough stuff to seal it all up and make it impervious to any further maltreatment. Suggestions welcomed. I'll post more pics once the K140 goes in.
One of the cool things about going all the way down to there is that not only did it turn out that we have lots of friends in common, he also has a huge ranch with a stage and does music festivals there. Perhaps we can even play there next summer.