I have a 9 year old still in a booster (I don't feel the seat belt fits him right even though hes a big kid for 9). I also have a 2 1/2 year old and 6 month old both RF. I'm losing the battle to RF with the 2 1/2. He's fine with it. My husband wants to turn him around. He keeps mentioning it all the time now. He's 30 lbs. Should I stand firm? We're traveling 15 hours in our van next month to a wedding and then back. DH says our boy will complain about his legs after that long in a seat.