4lex74 Hey 4lex74, I'm doing englang 1&2 this year and I am really enjoying it, however, as you probably would already know, the content covered in 1&2 englang would carry over to 3&4. So although its doable, it would require a lot of your time and effort to catch up next year. Additionally, I've often heard people who do more than 1 english say that sometimes the mix they up the content and for questions in one english they and up answering it using the approach used for the other english. So if you do end up doing englang, be careful of that.
This year I'm doing 3&4 bio and I can tell u its a hand full. So it'll take up a lot of your time thus it is not recommended you pick up a content heavy subject, especially 1 that you haven't done the 1&2 for.
I personally believe that picking up business would be the best option (I am also picking up business next year without doing the 1&2). The content isn't that heavy and thus it'll be easier to cope up with it. Also you are already doing 5 subjects this year, so by doing business, it'll most likely be your 6th subject, so you can stay chill on it.
I won't recommend picking up a subject that would require a lot of focus next year since it'll most likely be the 6th subject unless you aren't achieving so well in one of the current subjects your doing.
Hope this helps!