Possible Roles In The Much Talked About Dallas Movie?

Who do you think could play these charcters?

J.R. Ewing
Sue Ellen Ewing
Bobby Ewing
Pamela Barns Ewing
Cliff Barns
Miss Ellie Ewing (or Farlow)
Jock Ewing
Clayton Farlow
Lucy Ewing
Ray Krebs
Donna Culver (or Krebs)
Jenna Wade

and besides these rumored characters who do you think should be in it...