My friend's DC is in need of a new car seat. Age 5.5, height is 47 inches, I am not sure of the weight but average build..the main concern is height as current seat (Graco convertible) maxes at 49 inches. My friend says the harness is too small. She does not want to go to a booster yet, DC still sleeps in the car and she feels better with a harness. Any recs? Budget is a concern, but I don't know how much she can/is willing to spend. TIA!