Ever thought about military training? OK a long commitment, but unless you're planning to run a hedge fund, by the time you're 30 you won't be that much worse-off financially than your peers and someone else will have paid for your training. Fly heavies (eg. Nimrod, Herc, VC10, TriStar, C17, even BAe146 - and various replacements for some of these) rather than fast jets or choppers and you'll have your large a/c, multi-turbine, multi-crew experience (although I do know of at least one A330 driver for a major who came from choppers).
Just a thought.