Do you really want to find yourself lost in a cave with no idea how to get out alive? That's what cave training is all about, and not about how well you do the frog kick, for example. Focus on getting your head around cave awareness + safety and you will do just fine.
Help yourself by not introducing any new gear or gear configurations into your training. You will have enough to deal with during your training without compounding it with something "else" new, like a new dry suit, mask, fins, etc.
You are not going to be "perfect" with your diving skills when you finish the course, but you should know what skills you will need to work on to be so. Being "perfect" with your trim, buoyancy, etc., will come with time.
So thinks about it: If you get your diving skills down but you don't get your head around cave safety, do you really want a license to go cave diving anyway? Does that help you to see what your instructor is going to be looking for?
Oh, one last thing: Cave diving is beautiful, and fun; Look forward to that in your training.