I also have been in the same situation as you, we need something that can have 5 kiddos in the back, as much as a minivan would be most practical, I'm not a fan of them. so we have been doing searching around and have decided to go with a ford expedtion. we use to have a explorer, that had a third row, would have worked out great this time a round also, but lacks room in the back when the third row is up, an explorer being a smaller SUV, I can tell you that it did fit any seat we had ( youngsport,como,ss1,snugride,AOM,cosco combination booster,turbo booster, evenflo portabout) just great, I could get three across in the second row, and 2 just find in the 3rd. We are going with an expedtion, since we have been happy with our ford before, but will offer more storage. The one we are looking at has a bench seat in the 2nd row, but I know there are ones out there including other larger SUV's that offer bucket seats in the 2nd row. That might be something to look, also would it be easier to have the infant seat up on the 2nd row and the other kiddos in the 3rd? I'm think of what you used to do in the explorer, was have DD1 in a booster farthest away in the 3rd row, so she could have assist me in buckling her up, then DD2 in the closer spot so she could hop in the seat her self, then I could buckle her up, and placed my extra rear facing kiddos 1 behind driver, 1 in middle on 2nd row, so I had the seat on the passenger side to flip, just a suggestion. I honestly would just start looking at some, and bring car seats to try in them.