Glad you are happy with your top!
We have a mid CCV on our E series. Up top is a 300 watt solar panel at the front and a Yakima Mega Warrior w Extension at the rear. All of the foregoing are mounted to Yakima / Thule roof tracks, but a unistrut, or aircraft style track would work as well.
You will be limited in lifting capability with the mid height top due to the geometry of the lifting mechanism. Check with CCV as to what they recommend total load weight wise. The roof itself and the support mechanism are very strong, so that is not the issue. It is the lifting forces available from the stowed position.
Here are a couple shots of our EB CCV roof: