Lots of luck with your new project. Tell your wife what I tell mine:

Better in the garage than at a bar. And about the same expense as a few beers every night!

I have seen a lot of 'bent' valves, not any with pistons that are damaged. Remember the head is aluminum and nice and soft compared to the piston crown.

When you take off the head, put a zip tie around the exhaust cam and cam gear. That way you will remember which cam goes where.

I wonder how much it over-heated and why. Lack of oil or antifreeze, or a water pump failure. If the later, then the bearings should be just fine and replace the head.

Have fun, wear rubber gloves, and kiss your wife a thank you. She deserves it!

Klaus