I found that an engine hoist to lift the head out makes the job a whole lot easier for one person. At a minumum, remove the valves and check the valve seats for damage. You should replace the valve stem seals and guides, as you don't want to be back in there soon. Not a bad idea to send the head out for light surfacing. If they have to take off a lot of material, there should be thick headgaskets available.

You have to replace the head bolts, they're designed to stretch once and shouldn't be reused. Also, a tip for aligning the head on the way back in: take one or two of your old head bolts and grind the head off. Turn them in finger tight before you drop the head in, it makes it much easier to get everything in line without damaging the new gasket.