Pretty sure that Cruiseroutfit is correct. (He typically is when it comes to RTTs) but have you looked at the Camping lab tent.
2600 for the EA fam vs 1050 for the large CL... I dono, seems like a LOT to pay for an extra foot wider tent.
I can not find it right now, but I would swear that the EA tent had the possibility of a room divider in the middle of the tent. I guess that would be pretty nice too.
Have you thought about going with a smaller tent and then letting the children sleep in the vehicle? Depending on how much gear you are bringing, this might be a viable option for you. simply put all the gear into the back seat and let the kids sleep in the rear area of your SUV.