Yes, channel all around. Hmmmm.

Matt, I like your idea, but there is a fair ammount of movement in the channel setup. I guess I'm afraid over time the corner taping will seperate at the ceiling. The drywall is about 1/4" off the floor and the resilient will flex downwards if stressed to much (as its designed to do.)

I think I will just build the center shelf with legs to reach the floor, put an anchor or two to keep it from ever tipping forward, and bolt the tratments to either side like flags. Kind of a compromise, but I really cant of any other way.