Check out the Warwick Rockboard Tres 3.0 too. I have a 2.1 and a 3.1. They are really nice boards and are well priced. You'll probably need to remove the bracing bracket to fit the DC7 under it. It doesn't affect the stability in the least and removes a small amount of weight. I could probably have squeezed the DC7 under my 3.1 but it would have been very tight. I'd rather make it easier to change things around when I need to.Looks like I can fit the Shure, Stomp and Khan on a Pedaltrain Metro 16. The DC7 will fit underneath. A Templeboard Solo 18 works as well but is $100 more.
The 3.0 is about 1.5" larger in each dimension than the Metro 16. Very close in size to the Templeboard Solo 18.