So I'm kinda thinking ahead.... well for now I want to get 2 Monterey's for my 2 oldest dc. We're also planning on one more dc (sooner or later who knows ) I have an '02 Windstar Sport that seats 7 (2 captains chairs and a bench in back) If we do have another I'ld need to put the 3 oldest in the back bench (2 Monterey's and I'ld get a R65 for the third oldest) The thing that has me a bit worried is the side wings on the Monterey's. My older 2 are tall skinny things so I don't expect to have to expand the side wings (much if at all) Also the middle of the bench is a lap belt only.... can I safely secure the R65 in the middle with only the seat belt? Has anyone done this configuration before?