Hi guys, My son is 7.5 months and is 22 lbs, 28" long. We currently have a Chicco Keyfit 30 that he's growing too big for. We would like to get him in a convertible and I was hoping for some suggestions to make sure he stays rear facing as long as possible in a seat that fits our 4 door Jeep Wrangler. It will be put on the outside behind the passenger seat since hubby is tall and has the drivers seat all the way back. The keyfit fits well in the Jeep and I have a comfortable amount of leg room in the front. We were thinking of spending around $200 but we have family who will pitch in if the right seat costs more than that. If there's any information I left out please let me know. Thank you for your help!