Haha, i gues i don't really know how year 11 will be but i'm just speaking from my view of year 10. A lot of teachers may put pressure onto you but don't freak out
Public transport isn't so scary if you have people you knnow catching the train with you and it's not like anyone strange will sit next to you on the train
also it's pretty much just a 5 minute walk down a straight road? You just walk past kogarah high and you're pretty much there
well i don't know how well you cope with stress but for me, this competitive atmosphere makes you want to be better at what you're doing and you become more focused? that's how it is for me XD i think you should come to st. george!! you have to be prepared to work hard though, they expect you to know basics but sometimes it just depends on your teacher! i really don't know about o-day but i'm thinking early december/late november? hope you make up your mind! sorry for the long post i was kind of rambling there XD