no, I'm not saying "do 3", i'm saying "don't do 5, it's not worth it"
so what do you think i should do Mao? see physics i like, however it does get draining and i do hate the pracs they do, i just like the tests. So i'm considering dropping it.
then DON'T drop it. physics 3/4 moves away from pracs and you are a lot more exam-oriented. The only prac you will be required to design/conduct will be the Extended Practical Investigation, but that's only one SAC.
doing enhancement is definitely worth it, however admission will require good marks at school. If you think you can get 40+ in one of your subjects this year, and get A/A+ in all essay-writing subjects, then uni enhancement will definitely be worth looking at. uni enhancement don't have huge workload, very interesting coursework and it's pretty much all self-motivated. If you can self-control and do the required work, that's more than enough to get a good score.