First off, you don't need the Fish or Oyster sauces, in my experience, but you need pretty generous quantities of the thick sweet soy, which is also labeled "Kecap Manis" (or other spellings pronounced "Ketchup"). Use more garlic than they're listing too.
I've seen the thick sweet soy at H-Mart and Assi Plaza in Niles, and I've gotten Chow Fun noodles (aka Chow Fan) at Assi Plaza, and I've seen it in the Broadway/Argyle neighborhood at a couple of places. They're usually packaged as a great big folded sheet.
Don't freeze them -- thawing them results in a paste of gooey flakes. Use it or lose it.
What is patriotism, but the love of good things we ate in our childhood?
-- Lin Yutang