I am looking for a high back booster recommendation. My daughter is 8 years old, 53" and 60lbs. Her torso height is about 19". She currently is using a Britax Frontier in our main vehicle, but we're looking for a booster to put in our 2017 Honda CR-V. It doesn't currently have any child seats installed, and we don't plan to do 3-across. I'm looking for something that will last a while, or that can be converted to a backless booster later on, but cost is not a factor. I would also prefer lower anchors for when she is not occupying the seat, but it's not a deal breaker. Thanks!