I too feel you are looking at buying and modifying. Our rig has to captains chairs, sofa, swivel rocker recliner and the dinette. In my never to be humble opinion, if you had swivel rocker for the kids, they couldn't see as much as if sitting on the sofa or dinette.
The visibility from the rocker sucks, even if it is considered legal because it has a seatbelt, there are no side airbags. Which is proper safety? Both the sofa and the dinette have better visibility that a proper chair.
Personally I think your chasing after something that not only doesn't exist but will not provide what you are looking for.
