Well, boats don't go all the way to Pop/Art nor CB/Riviera. And the boat to/from Epcot/DHS take FOREVER. You can walk faster.
The Skyliner should actually be shorter.. and more scenic.
The vantage-point of the concept art for Ratatouille is from the Skyliner.. so you have that view.
I didn't realise CB would be one of the stops and that's probably the most central so that would be the obvious choice if that's where I was staying.
Has there been any word on how many people will fit in a car at once?
I'm guessing CB will be a kind of hub as it has 3 routes leading out of it so will you have disembark when you arrive or will you be able to pass straight through?