Why don't you get yourself a decent job and work while you fly that way you don't need to put yourself at such a high risk of going bankrupt when you're not working for any airline?
The repayment on a loan to pay the flying you're talking about £1,000 per month where are you going to get a salary to cover that while buying a car, house etc?
Military is a fantastic route but it's far harder to become a military pilot than an airline pilot.