New Van Help?

I just got back from my trip to New Jersey with my amazing BMW, thank you everyone for helping pick that out! Anyways my kids will be getting off for spring break in a couple of weeks and I would like to take them to Chicago to see their grandparents. I would like a van, I was feeling a sprinter van, that can take a long haul. Something with a lot of room that is comfortable, safe, I can have it customised to what I need, and possibly sat nav (I have a portable one so its not necessary). I was going to fit four captain seats in the back with a television or table, so it has to be large. My friend has a Honda Odessy that has the back all customised for long haul trips. If you have any suggestions on what I should get and how I should customise it I would be very grateful! (I don't usually take my kids on long trips or use vans so this is not my forte. Thank you so much for helping! And any suggestion would be great, money is not an issue.)