Welcome to the board!
Logan moved to a full sized bed around 3 years old :)He also potty trained right around that time. I think potty training is all individual - I tried with Logan from 2 years - and he got the peeing part right away.. but the poop didn't happen until he was ready, despite sticker charts, rewards, and bribes ;) Good luck!!
Potty training....there is no set way that works for all children.
Wow, talk about everyone being different!