Or do you think we are crazy for even thinking about driving this far? Thank you!
I think you're crazy! and A lot braver than me.

I could have done it with mine at 3 but driving that far with a 14 month old
My DD was such a bad traveler at that age that I dreaded a drive to the grocery store with her.
Good Luck! Your kids must be better travelers than mine if your planning it.
Gramma brought her portable DVD player on the NJ to Kansas and it made a huge difference! Enough that Russ' third birthday present was an installed DVD player with wireless headphones. 
That kind of put a damper on the trip.