I agree with the last 2 posts there, but would also like to add that if you open a savings account (ISA perhaps) and put as much into it as possible while doing your distance learning ground school (and still working) you should end up with at least something to start your flying training with (when the time is right).
It'll earn you interest now, be something tangible to see your plan, and will reduce the amount you need to borrow in the future.
(And yes, it's what I wish I'd done at this point in the last economic cycle).