Since you're in JAX you can easily get to you local smart center and try one on for size! You and your wife shouldn't have any trouble ~ the dog, maybe, maybe not, depending on whether it's a Newfie or a Jack Russell. . . LOL

The really great thing is about smarts - if you don't like it, you can always sell if for what you've got in it - even after lotsa miles. Whatever, you gotta at least go visit one.
Good luck!