^^^Really good advice above!
In terms of the workload difference between English and Lit, that depends on your strengths/texts/teacher. If analysing texts is easier and/or more enjoyable for you, then you'll probably find the Lit workload more manageable (since close text study = 100% of the course!) whereas you may get stressed or frustrated by the different kinds of assessment tasks in English (i.e. media analysis, giving persuasive speech, etc.) Or you might have some typically 'easier' texts like films or short plays that are easy to analyse, whereas the other subject might have very long (400+ pg) novels that just require more time to read and study.
The assessment might be slightly different by the time you get to Year 12, but it'll be something like the current structure:
English:Throughout the year:
- Creative writing task based on a text
- Text analysis essay
- Analysing persuasive media articles
- Persuasive oral presentation
- Comparative essay based on two texts
Exam:
- 1 x Text analysis essay
- 1 x Comparative essay based on two texts
- 1 x Analysing persuasive texts
Literature:Throughout the year:
- Comparing a text to an adaptation (e.g. a novel that's made into a film)
- Creative writing task based on a text
- Close analysis essay
- Literary perspectives essay
Exam:
- 1 x Close analysis essay
- 1 x Literary perspectives essay
Basically, there are some similarities, though the Lit course is a bit less broad and gives you more time to focus on your texts and 'deep dive' into language and meaning. The nature of the analysis essays between subjects is also quite different - in English there's more of a focus on themes, the key ideas within a text, and your interpretation of these ideas. Meanwhile, Literature is very language-focused; you still build up to talking about ideas, but you're expected to spend much more time analysing the text on a micro-level!
The simplest way to explain the difference is that English is a bit of a 'top-down' subject where you start from 'big picture' ideas/themes/arguments and
then delve into the text to find evidence for them. By contrast, Literature is a 'bottom-up' subject where you
start with all of the evidence on the ground level and gradually work your way up so that you can examine how language creates meaning.
So if you don't know who your teachers will be or which texts you'll study, maybe think about whether you're a 'big picture/top-down' kind of thinker, or a 'ground level/bottom-up' one?

If in doubt, you could try both in Year 11 if you have the room. Otherwise, I would say it's easier to go from
Literature in Year 11 -->
English in Year 12 than it is to start with English and then try and move to Literature. If you're keen on passage analysis though, definitely stick with Literature! (I promise not everyone doing that subject is a freakishly passionate, hyper competitive book person - most students just like close analysis or want something a bit different from mainstream English!)