So I drive a kia sedona. I currently have 4 girls, and just found out I am expecting again. I need to fit 5 carseats in my van as my kids are 6 1/2, 4 1/2, 3 and 15 months. Right now the seat configuration is as follows. My oldest rides in a turbo booster in the 3rd row drivers side. my 4 1/2 yr old rides in a Apex 65 (still harnessed b/c she is a small little thing) in the 3rd row passenger side. There isn't much room between the seats, my friends 9yr old can ride between them, but that isn't an option for me as my oldest won't be 8 till September of next year. My 3yr old rides in the captains seat passenger side in a graco nautulis (sp) and my 15 month old rides rear-facing in an evenflo triumph advance dxl (or whatever they call it, harnesses to 50lbs) behind the drivers seat. The infant seat I will be using is a Graco Safeseat and I have as extra seats an evenflo booster and a Cosco Serena (which only fits my littlest, but I'd like to keep her in the evenflo if possible). Thoughts? I've tried to fit another seat between the two seats in the back and it just didn't work, it wouldn't fit.