Tom has clearly decided to concentrate on the Spanish series as the first couple of rounds clash so he had to choose - which is interesting as, although it is a lot cheaper and the tech regs are far looser, the prize is a lot less a well; maybe he didn't fancy the opposition in the UK?
As for the rest, I think Breeze will probably be quickest at the first round as he is naturally quick and has done a lot of testing. Oli has had a couple of test days - the first to simply shake down the car, so will be playing catch-up - but has the speed and strength of character to win the championship.