I want to do Gymnastics...?

okay so i really love gymnastics and i did it for about 4 years when i was younger and i currently do cheer-leading (we are a beginner team not that good) I can only do, forward/backward rolls, cartwheels, round offs, front handsprings. i can do splits left and right but not side im close though, im really committed as well so i would put in 100% in classes. i know that there is more to gymnastics than just tumbling, i used to be able to do front and back hip circles on the bars so i should be able to pick them up again. but yeah what level would i be in and is it too late? would i be training with people heaps younger than me im 14 almost 15 ?thank You.