Hi Livv!
I did VCE Drama in Year 10, and I wasn't the best at it, however I did learn some important stuff by doing it
By doing a VCE subject in Year 10, you'll already be prepared for the workload when you start Year 11, with your other VCE subjects. If you don't do well in the VCE subject, you can always repeat it the next year, and you'll be even more prepared for what you will learn.
I chose to repeat VCE Drama Unit 1 and 2 in Year 11, and I was more prepared as an actor, plus more familiar with the terminology and theory work. I knew friends who did VCE Biology, Chem, Gen or Methods in Year 10, and they benefitted from them too. Talk to your teachers about these subjects, and see what they think