A wise move?

Hello

Im a English actor at 20yrs old and currently in the 2/3 years in University studying Performing Arts

After this, in 2009, I plan to move to America.
Ive been there before and I simply adore it!
My mam lives in Minnesota quite near to the twin cities and I was just wondering to any Minnesotans out there in Actors Tips Land if this would be a wise move, even if it is for a few years.

If I move before Im 21 I will not need to get a work card etc as my mam has been a citizen for 6 years.

Could this work? Im looking for theatre and/or film, as long as the balls rolling !

If so, what should I do in this next year to prepare?

Cheers,
Danny Bay