My daughter's car seat in my car recently expired and I need to purchase a new one. She is currently 33 pounds and rear facing (don't know her exact height but she is generally large for her age). I was initially hoping to find something that could convert from a car seat to a booster but it looks like none of those can be used as rear facing and I think she's supposed to be kept rear facing until she outgrows the seat's limits for rear facing (though I will say it is getting increasingly difficult to lift her into the rear facing seat at her size). Any recommendations for an easy to fasten seat and doesn't take up too much space? The seat needing to be replaced is the Maxi Cosi Pria 70 and I have hated it since day 1 when we purchased it for her big brother. As an adult woman, I feel like it is impossible to get tightened.