If you can buy it you can upgrade your current account no problem

your dark and light side points don't cancel each other out so you can do both it will just take longer to level each side up

Just that it is frustrating and did not realize I was a different server and now have 7 characters all around level 10-15 would really like to have had one character at around level 30 by now.......guess it was my bad for thinking it was sorted.

I want to know if I will be able to move my characters from server to server?

exactly right.... we are being giving up to 5 days extra to play so I am assuming that by tomorrow almost every pre order should have access to play