Remembering an essay word-for-word is a guaranteed B-range mark. Because your answer, purely by virtue of being rote-learnt ahead of time, is going to be sophisticated and verbose enough to satisfy half the marking criteria, it will get pushed up to a B. Because your answer, purely by being rote-learnt ahead of time, is not going to have a hope in hell of being directly relevant to ANY question (beyond an absolute gift) given to you on the day, it will get dragged down to a B.
If you hate the two-unit course and are happy to come away with that mark, then go for it. If you're looking to max out your ATAR, then you'd be much better off trying a different tack.
I don't really expect this point to change your mind because you look like you've made it up already, but memorizing extended responses to the letter is a terribly, terribly inefficient way to study for English and will cause you an awful lot of anxiety - as it gives you no margin for error or chance to improvise. Also, as artificial and contrived as the course is, it is in the end a great opportunity to enhance your critical thinking and relating skills which your study techniques don't foster at all.