Even KZ's 160rbt is almost 19' long. And I don't think they do the side a/c anymore.
I don't know of any hybrid that's under 17' tongue to bumper.
And as was said, none will have a u-dinette, just not enough room.
So you have to give up somethings.
Dan- Firefighter, Retired:C, Shawn- Musician/Entrepreneur:W, Zoe- Faithful Golden Retriever(RIP:(), 2014 Ford F150 3.5 EcoboostMax Tow pkg, 2016 PrimeTime TracerAIR 255 w/4pt Equalizer and 5 Mtn. bikes and 2 Road bikes