We bought our 1st hybrid in 2003 and owned it for 10 years. We've had our current hybrid for 4 years. For right now we wouldn't have it any other way. We've camped as low as upper 20s, as high as 100. Always comfortable. Of course we came from a tent and a pop-up so keeping warm was always a matter of an extra blanket or heated blanket.
That said I since you really don't have any tent or pop-up background I'm thinking a hybrid is not going to work for you.
Have you considered a tent for the kids? Not sure if this is even possible with your 13 yo, but our daughter used a tent when she went with us from about 14 on. Her and her husband still tent.
