I need car seat help for my chunky chops 😊

Christina • Married💍Baby boy 💙 (Aug 11, 2019) Baby boy 💚 (July 5, 2020) Angel baby 👼🏿💛 (March 14, 2022) Angel baby 👼🏿💜 (June 5, 2022)

My son has out grown his car seat that he had since birth. His head is higher than the headrest and his feet stick out at the bottom. He's just 5 months old and 29lbs. What kind of seat do I get him? Rear facing again or those bigger front facing ones?