So I am one of those unfortunate enough to accept the first quest that popped when being prompted to choose GC, and like many others selected the Twin Adders because it was the first quest that popped (yah i know its stupid, anyway..)

I was Immortal Flames in 1.0 and want to go back there because i like Ul'dah best, and have gear in flames, I have now completed mainstory and am about to become Second sergeant rank needed to be able to change GC.

My question to anyone of you who have alread changed are:
Do we have to redo all of the story line just to get access to all dungeons and primal battles and such? or can I still be able to join my friends in Lv50 dungeons after changing GC?

Also, if anyone knows if everything from 1.0 GC is lost by choosing another GC in ARR or if we actually get to keep the 1.0 stuff after going back to that GC would be great to know.

Thanks for any information regarding this, google isn't helping!