Indeed if you are able to start your training sooner, you may ensure to have a position with WizzAir. However I guess that after the last interview with WizzAir, if they want us because we fit to the company, it won't change so much to start in February instead of December, knowing that with the shortage of pilots they plan to have, the need of pilots will last for some time.
I think like you, don't wanna rush to get there, I want to prepare myself correctly, on the other hand my goal is to sign my contract with them as soon as possible.