I am trying to figure out what will work best for putting 3 carseats in our Subaru Forester. I have done some research and initially came up with using a Chicco Keyfit 30 and 2 Diono Radians (although I am not sure about the RXT vs. R120?).

However, my older children are currently 3 and 4 and I read on the Car Lady website that many kids outgrow the Radian's booster ht/wt requirements before they are able to use it as such. I was hoping to buy seats now that would function as a 5 pt. harness as well as high-back booster in the future. She recommended the IMMI GO but I am not familiar with that seat.

Has anyone fit 3 across in a Subaru Forester or has experience with any of the seats I mentioned?