6066 (1960-1966) GMC Truck Club

Long story short. I decided to take the front clip off so I can do some painting in the engine bay. Now I am pulling everything off of the engine so I can paint it also. At the same time I am ordered a gasket set that came with everything so I figured I might as well replace the head gaskets. I have very limited mechanical experience. What do you guys recommend doing to the heads. I have pulled the rockers off and took the push rods out. I have also pressure washed them as well. Do I need to take the valves out and clean them or replace the seals. I will try to upload some pictures of my progress or mess. Depends on how you look at it.