sounds good to me.
For all means and purposes, I'd use the largest SQUARE port you can manage, and tune it low (28-42hz) for daily listening or about 4-5hz lower than your vehicle's resonant frequency for SPL. There are a couple of old threads that explain how to find your resonant freq., so if you do a search, I'm sure you'll find it.
Very nice choice, BTW. I'm sure you'll be impressed with the driver.