...just head gasket replacement with head resurface, I've done many of those with the block just as clean and good as yours and got perfect results. That's why you use a gasket instead of just bolting the head on the block. Small pits are filled in by the new gasket, as long as the block isn't warped or cracked. If you were worried about piston replacement you should pull the engine and strip the block and have the cylinders, connecting rods and crankshaft reconditioned by a machinist. It doesn't look like you asked for any of that. Put it back together and you'll be driving, without a worry in a few hours.