For me 3u was hard in year 11, but became easy in year 12. It's just a matter of getting used to it. If you do it and plan to drop at the end of year 11, don't drop it until you've done a term of year 12.
I'd say choose depending on the teacher you're going to get, if it doesn't really matter to you which you pick. A good support system is very important. Geo doesn't run at my school, but I do legal and would recommend against it unless you love essays.
Yeah I know :P We have a huge 4u cohort (like 40) though so it's hard to compete with 40 kids who are taking 3u as a 2u subject. Teacher says I should be pushing for top 10 in 2u though so I'm trying to rectify that. Thanks :)
Advanced English 24/140
2 unit maths 20/129
Math Ext1 65/108
Chemistry 33/107
Legal Studies 6/24
Modern History 20/29
School rank of low 30's.
Thank You :)