Sn-85 has some valid points. Especially on space- the width on that tent allows about 24" width per person, which is what we have in our CVT 72" wide x 96 long for 3 people, so 24" wide per person.
The set up is actually pretty easy and takes about 10 minutes. Taught my boys how to do this on their own at 13 & 14 and they mastered it pretty quick. The take down is where they needed help from me when they were little, that process is about 15 minutes.
The take down explained- it's kind like a PB & Jelly sandwich, with too much jelly. When you compress the bread the jelly spills out. Same goes for the tent, you'll end up with tent fabric spilling out, that then needs to be tucked back in on 3 sides. And as SN85 said you'll be climbing up on wheels, rear bumper etc, to stuff it all in so the cover will go on.
PRO tip, leave the entrance cover flap open, so when you close up the tent your not trying to compress all the air inside = less spillage & less tucking. Doing this made a huge difference on the take down.
Other thoughts-
A really comfortable mattress is huge win for us.
We camp a lot and have everything from bivy tents, to solo backpacking, to 2,3,4,6 man tents. And all kinds of sleeping pads, from foam to air and combos of those. None compare to the CVT premium mattress, sleep just a well as any real mattress.
A Con - like any tent you don't/can't put it away wet for very long. A ground tent you can hang in your garage when you get home. dry it out deal with it later, but a RTT is going to need to be opened up and dried out with in a day or so. And since it's on your rig, there's that to consider.
Rent one of any brand if you can, so you know from your experience. Any way about it camping out with your kids is one of the best family adventures one can have no matter how you do it.
Good luck.