Love my Challenger and I was torn between the Octane and Frostbite! I went Frostbite because I have a Deep Cherry Ram and a Mystic red Harley so went Frostbite for the Challenger. If I would ever get a second one it would be Octane for sure!
As far as backseat? You won't be makin any more kids back there and unless your five, a circus freak or a midget you ain't gettin in and out!