As others have said, plan 1 is not worth paying off earlier than you have to, current interest rate is 1.25%. I.e. its inflating itself away.
That depends. If you're not getting 1.25% on savings/investments then your money is inflating itself away faster than your loan is so you'd be better off paying it.
its wiped when I hit 65!! I can't really afford to put more towards it so it looks like 10 more years for me until mines paid off.