Hello Ed;
Liked the photo and would suggest using filters on the lens such as skylight, haze, or #8 yellow. I like having a constant routine when developing! I use replenished D-76, using a presoak. You can do the same with D-23 and the Formulary sells the kits. The important thing here is a selecting a solid routine for repeatable results. You will have to experiment to achieve this. I thought that D-23 was the forerunner to Microdol-X, so a loss of film speed. You might expose at 250asa and develop full strenght at 8 minutes. Just a thought, Steven.