Although this forum has gone quiet here is my 2 cents worth.
My advice would be not to take out a loan to go flying. If you decide to bail because you realise that nothing is guarranteed in the aviation industry, then you have not got the obvious $$$$ + interest hanging over your head. You will have plenty of opportunity to take a loan when an operator promises you work if you pay for an endorsement or if you have to have a particular type on your licence to get a look in. Potential employers may ask you how you got the money to learn to fly, and having worked 2 or 3 jobs to get it, is looked upon favourably....as is a degree of some sort. Bare in mind that the dollar figure quoted by most flying schools is based on the minimum requirements for the licence.