Paul56:
If flying is what you really want to do then go for it.
You can spend similar on HECS and still have no guarantee of an outcome.
Either 60K-75K on flying or the same on a uni degree - the result is the same. You will have a fresh qualification that allows you to start what is essentially an apprenticeship to a career.
What you have to ensure is that you don't fall into the trap that a lot of newbie CPLs do and hang around the big smoke and whinge all day that they can't get a start.
If you do decide to go ahead and achieve your 'licence to learn', then get out there and grab your new career with both hands.
good luck.