Absolutely right on all of these, especially #5. When son #1 was born 5 years ago, I dug in my heels on the minivan thing and got an SUV. Everything was fine until son #2 arrived, and son #1 started having playdates... no room for car seats and boosters for everyone. Meanwhile, all of our friends had taken the Sienna/Odyssey leap. It was right around that time that... y'know... those minivans started looking pretty awesome. We finally took the plunge last month, and have never been happier.
If you can swing it, go the whole nine yards: DVD, JBL sound system, Bluetooth, 72 cup holders. And the first time you hook up the video game to the DVD system through the aux jack, your son will look at you in amazement, as if you had just invented fire.