I would run the Performance Friction "Z" pads from Autozone. THey are the $60 (not $30) ones, and come with a lifetime guarantee. I used to get a new set ever spring for my roadracer
Rear drum brakes are basically unimportant, so get what you want there.
If you _really_ want brakes, then bit the bullit, and get some PBR's with 13" rotors like I did.