Kinda what I'm doing, only attempting to speak with them direct.
I see they have a model with the twins so within their capability. Not install the shower should be as well. Add a window or two, heck they have them so should be as well.
Building the half wall may not, but I'm a carpenter and can handle that. Just don't put it in.
I have a dealer nearby, but you know salespeople, they haven't a clue expect what's on the sheet in front of them. Typically I find when I walk in there, I know more about it then they do.
Really hoping to hookup with the factory!