Firstly, limit your posts to one forum - or you'll lose them all!
Secondly, I'd check whether the 'working holiday' visa may only apply to UK, so you may not be able to work in other parts of the EU even though you can travel there. As to whether you could get a flying job will rather depend on how prepared you are to do the rounds of the air-taxi, night freight or other organisations that might possibly want relatively temporary labour. I would have thought your chances may be slim, but I'm sure there are those out there who can prove me wrong!
Scroggs