Is overspray on cylinder head ok?

You know Rob, sometimes the board goes over the top with suggestions. We've all read about asking for a little more pep from a 318, and ending up with a stroked, aluminum headed blah blah blah.

But in this case, I feel that it would in fact be wise to look a little deeper. Not saying that he needs to dump a ton of $$$, just catch any catastrophic potentials. Can you imagine running that valve train?
I don't disagree. What's a good gasket set cost?