A worn out toothbrush and Novus 2 will be your best friend. The plunger looks mushroomed from being played to death with no rubber tip. I would file that down or replace it. Everything looks like it should clean up nicely. Don't forget to clean the underside of all the inserts with a q-tip and glass cleaner. New rubbers, flipper rebuild kit, new bulbs, lockdown bar button. I would think everything you need could be had for under $200.