Hi
you showing GIC , that itself suffice , however showing extra funds always makes your application stronger and there is no harm in showing your fathers bank statement, but remember one thing , if you show your father's bank statement you will also have to show a consent letter from your father , stating this money can be utilized for your studies.
Also remember , if you showing your father your sponsorer you should show your father ITR returns and other documents proving his financial establishment.
ALL THE BEST