Crib until college?

Katelyn won't need a bunk bed in her dorm because she will still be sleeping in a crib. I know most of my friends who have children close in age are starting to move their little ones into a toddler bed. Honestly, I can't remember how old my son was when he got his big boy bed. I just don't think our little princess is going to be ready any time soon. She is a really wild sleeper! The bumper is still in place because I fear she would smash her head into the bars. I check on Katelyn at night and find her in some very interesting positions. She literally does circles around the bed.... and yes, she is sleeping with her feet hanging out.