Option B is to add the rubber brake pads from mugen. This is the route I took.
At about $4.50, it's a bargain. You have to glue them to the metal brake pads, clean the mounting holes, and make sure they slide freely on the mounting bolts.
With the fibre brake, it's an easier exercise - install it!. You will be paying $10-15 for HPI's upgrade fibre brake.