Advice Tom (my opinion only)
Tom,
You stated yesterday that you are only 17. I think you will struggle to land a job.
Give yourself a chance. Get a normal job for a little while. Save money and get worldly wise. If you train now, you have little chance. You will still only be about 19, and that IS YOUNG for a flying job with an airline.
It does happen, however not too often!
Also, in a couple of years youe will have been able to assess the market better. Maybe even apply for BA or Britannia sponsorships etc!!!
The two or three lost years of not flying will stand you in good stead. You will have a checkable background and some life experience. Rather than just saying Mummy and Daddy paid........you will be able to tell your own stories of experience.
It will do you know you no harm at all.
My opinion only.