Those CCS predictions are all based on where you fall in relation to the junior man. The WB basing footprint particularly at the moment makes it difficult to use that as a realistic measure. Also, if for some reason a vacancy bid results in unfilled WB FO vacancies, the company can (and has in the last two years) put those in the new hire bid.

That being said, as soon as you are an employee, you can bid on those vacancies and in some cases never complete the training on your initial aircraft if you were to get an award.