@2corinthians1114 I agree with using the RRSP. You wont pay capital gains on the RRSP, but it will have a percentage withheld(I believe 10% for that amount) in anticipation of taxes, then it will be included as an extra $3700 in your income taxes this year.
I'd 100% pay of the LOC first, then the remaining two debts would depend on your relationship with your family - make it a conversation. Personally I would pay LOC, then Student Loan, then family just from a math perspective, but if that is going to negatively impact your relationship then maybe tackle the family debt first.
In future, if you can avoid borrowing from family - or even from anyone, it would be ideal. Family especially as it seems great at first, but can ruin relationships in the end.
Good Luck!