Mounting Auto Home Columbus RTT on Ram 2500 Cab?

I have a 2019 Ram 2500 Cummins that I use to tow a Kimberley T3. For a variety of reasons, I'd like to have a rooftop tent. I have a topper on the pickup with a solar panel covering the entire roof of the topper. It powers my fridge in the truck. The only place for a RTT is on the cab of the Ram. If I can make it work, I'll buy the Columbus Variant, size medium. Rack Attack in Minneapolis will install a Yakima system on the roof of the cab: Landing Pad 21; Skyline; and a pair of HD bars (large) with an adapter. Has anyone reading this installed a rack system and a RTT on the cab of a Ram 2500 Crew Cab of the same generation? If so, how has this worked for you?
 
And 100 people have confirmed it fits the cab on the new 4.5 gen. The company has just not mounted it yet so doesn’t list it as fitting
 

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