I know you must have thought of it, but just in case, DYNAMAT EVERYTHING
Any new good sub with move more air than the Bose. My Alpine Tyre 10 inch moves 13 times more and the interior wont take it without the sound deadening, cos there not alot in there already. The vibation inside will just make it sound S@*&t no matter have good your components are. I know Dynamat is not cheap and you cant see the money in it, but do it. It is worth it. looking forward to the pics.
Oh... The door speakers need to be shallow too if you're chaging them. Give Hertz Space units a look....