John,
Your off to a great start with some nice progress.
When I built my WF I made it single headlight with the curved fender and stirrup steps. The headlights aren't as difficult as some may think. To start with you need to remove the existing headlight bosses. Fill in the holes and sand them smooth and round, following the natural curvature of the cab. Then mark out the exact position of the centres for the single headlight. Take a piece of plastic tube and glue a piece of flat to each end. Then sand the flat piece until it is perfectly round like the diameter of the tube. These will be the housings for the lights. Take a small drill and drill a hole in the centre of the marks on the cab. Carefully open these out with a small round needle file to the same diameter as the plastic tube. Cut about 1/4" or so off the end of the tubes that you glued the flats on. Insert these into the holes in the cab and glue in place. For headlights I used the ones from the Tamiya mini car. These were perfect and had superb fine detail (What a shame Tamiya don't make trucks.). You can add the rivet detail using titchy train group scale plastic rivets.