Its not a career to get into if you are chasing the money. It is a long, hard road with many sacrifices and little security. It can also be rewarding in many ways.
The best advice I would say is to have some money saved to help you through the lean years. Not easy after paying for all the training.
Even if you get your dream job (which will likely take years if ever to achieve)
the first year pay will be very little.