Convertible seat for Kia Rio hatchback?

Tina
Hi mamas
I'm trying to pick out the best car seat for my car and baby and feeling overwhelmed. I have a 2013 Kia Rio hatchback and it's small to say the least, but I still love it! Does anybody have this car and a recommendation for a car seat? I'm looking to switch from the bucket seat which takes up a ton of room. 
My daughter is currently 7.5 months and 15.5lbs. Unsure of her height but she's not abnormally long or short. I'm looking to switch in the next few months.