Class C extended chassis, Thoughts or your experiences

Hey Guys thanks for the very helpful info. Yeah, I'm not an engineer but instinctively wonder about stretching a chassis, how it's done and how much weight the stretch and the additional box adds. Thanks for the other tips too, i.e. turning radius, maxed out to total GVWR, rear end swing out, etc. Looking to do something in January and just narrowing it all down to a decision. Planning a cross Country trip (homecoming) for April from FL to Nor CAL. Anymore ideas would be apppreciated.