Hello everyone. I will be in London on friday for a short time, about half a day. So I want to get the new macbook pro 15" high end from there. I would like to get hi res anti-glare screen and 500GB HD 7200rpm instead of the default 750GB 5400rpm. Would it be available in the apple store for pick-up? I remember reading somewhere that if you want those customization, you might have to order online. Thank you p.s. this will be my first macbook, I am extremely excited!