Here's how I have mine deployed. I've since added a layer of toolbox drawer liner (thin slightly rubberish sheet) between mixer and rack case to add some stability and reduce chances of a topple. I've got the powersupply, headphone amp and bass pre in the rack, along with all the necessary cabling. I velcro the router to the outside of the rack case when in use otherwise it's stored in the case itself. I'm pretty happy with this setup!
Final part of the solution will be what goes betwen the rack case and the floor to get the mixer up to counter top height. The piano stool shown does NOT get deployed!!! I found a chair of the right height when I first deployed it last weekend, but will have to find a more permanent and portable solution. I'd like to use another road case but that defeats the purpose of the minimalistic type of setup I'm trying to achieve. Might make something hinged and collapsible out of plywood and paint it black.