If you want a flying career, you are likely to have to wait at the moment a couple of years after getting your (f)ATPL due to the very high numbers of low hour pilots.
If you borrow any money and do a full time course for around 2 years, you will need to find any job you can after gaining a (f)ATPL licence.
Just to give you an idea, I like lots of other people completed my (f)ATPL Licence 4 years ago and still waiting for a real flying job. As the years go by you have to continue renewaling your ratings and your class 1 medical which adds up over the years. I have spend between £10-£15K since completing my frozen atpl, by flying at least once a month , plus I kept up my ratings too. I have and will pay for a type rating tomorrow if an airline offered me a pilots job.