It's a no brainer - that amount of debt for a lifetime career that's the envy of all your mates!
The initial investment seems a lot but if you offset it against potential earnings then that cost is minimal. I got the CTC thing when I was done training and started on a proper salary of about 42k. If you don't get that even my tprop mates started in the high 20's. And one of my other mates put it quite bluntly - how comfy are you now in terms of earnings, this is probably the least money you'll earn for the rest of your life!' Yippee.
Spend it!