Is Too late for me to cheer?

I'm 16 years old and I'm a sophomore I'm soon moving and I found out the area I'm moving to has a cheer gym that won worlds or have been there so that just means that they're really goid so that's a good sign.My goal is to at least make it to level four is it possible to make level 4 or 5 once I'm a senior (18 yrs) Im a dancer so I have all three of my splits (right,left,middle)I can also do all three of my splits in the air perfectly.Also I'm naturally flexible I have a perfectly straight scorpion/needle I also have a excellent scale.What I REALLY need to work on us my tumbling sure I can do real basic like back bends going down and up,round off,cartwheel,one hand cartwheel,currently working on aerial,I got both front and back walkover.So I need to work REALLY hard on tumbling I'm just not sure if I will have what it takes by then I mean all senior levels have back tuck,layouts,twists,and BHS are just basic to them ,also let alone learning the positions if the pyrmaids like backspot,base,flyer etc.Theres a lot to learn in so little time is it possible??????