So we've got Wagon Jr., 2.5 and 33 lbs, forward facing in a convertible (Britax Marathon). We've got Lil Miss Wagon coming soon, who will be in a Graco Snugride rear facing. Should we shift Wagon Jr. to the middle of the backseat and put Lil Miss Wagon on the passenger side? I'm thinking that with the way the seats are, she might have to go on the driver's side. We have a 2011 Honda CR-V.