I would say it's not necessary Steve. First off you'd need to dismantle the top cover to get to the bolts, it's not leaking now but it may do if you disturb it, why take that chance. The other is when you get an engine done in the workshop they'll only do it once and then you take it away so it's not done in practice, I've never said to any owner of any engine I've done the head on "Bring it back in a few days so I can retorque the head" It goes out of the workshop and we forget about it.
Just leave it, if it's not leaking leave well enough alone is my advice.