Hello, Redden.
Personally, I believe it depends on a few factors on whether you want to do this subject.
For one is your willingness to commit to the subject. There is a lot to learn over the span of two years, especially considering that Units 1/2 and 3/4 don't have much to do with each other (Yep, thanks VCAA, very helpful there). If you know any students who are taking or have taken this subject from your school, ask how they feel.
Two is your writing ability. Essays in EL work a lot differently compared to Normie English. There are normal essays, but some SACs can be in the form of narrative reports, analytical commentary, short answer questions, or praying to whatever God you think will help you get at least a 25.
If I were you, and were thinking seriously about doing English Language, I'd probably start learning metalanguage (stg, you will learn to hate this word and its contents for decades to come). I would also get tips from any English Language teachers on possible work you could do in order to prepare for next year. Unit 1/2 talks about the science and history behind speech and language, which is pretty interesting, but Unit 3/4 just turns into a chaotic mess of metalanguage, essays, incredibly important notes, and many tear-soaked tissues on your desk.
I know I seem very critical of it, but usually it's those, like me, who choose English Language as an easy way out of doing Normie English. You have to be mentally and psychologically prepared for every little task that you are given for homework, revision, study and coursework otherwise, the result will look similar to mine.
But by all means, seek alternative opinions, and best of luck whichever pathway you take.