It sounds like you have thought out the problem pretty well. You already make reference to using the modules and elements I'd normally recommend. And I'm glad to hear that this isn't a case of knee-jerk reactionism, that you plan on having the "hits" reviewed by human eyes before axing them.

I'd say charge forward with the plan you have, and let us know if you run into any difficulty code-wise.

Plus, I'm tempted to give you a ++ vote just for the sheep reference in your "naughty sites" RE :-).

--rjray