I just wonder if I could take my successful online application and postpone the assessment until next years round.
Unlikely I'd say, given the sheer number of people on here who applied last year and are reapplying this year.
I don't want to just throw £250 at a tiny chance.
Not wishing to sound rude but why did you bother applying? You always knew there would be a skills assessment and that you'd have to pay and that the chances of success are low. "You've got to be in it to win it" springs to mind...