Vibrato Valtat is of interest to me as well, only for the fact he's one of the few that's definitely being aimed at this race. Unless one of Vautour or R2R turns up it's going to a really poor quality field.
Are you convinced VV will get 20f? Only raced once over that trip (2nd to Clarcam). I have always felt VV is short of top class but that is based mainly on 2m form. 20f could be the making of him so you might have a point if he stays the trip.