Do a search for this sort of thing, there is plenty to read up on.
Basically, you hit the nail on the head when you said you couldnt keep throwing money at it.
If you arent prepared to part with tens of thousands of pounds in the hope of getting a mediocre job as a helo driver for many years (5+) before qualifying for anything juicy. Bang out NOW!.
how old are you - if over 25-28 say, you'll be middle aged and bitching about the industry before you even get a look in at anything enjoyable.
Those who make it - sacrifice home and heart (and bank balance).
You dont sound committed.