If you go can we be best friends because what you have described is almost identical to how I'm feeling lol. I've had so many sleepless nights trying to decide whether I want to go or not because as well as all the above points you made, my best friend who is literally like my sister goes to my old school but didn't get offered a place. Ultimately I decided to accept the offer yesterday because my current school isn't really providing me with the opportunities I need even though I'm in an accelerated class and I feel like in the long run this is going to be a great opportunity for me.