Good progress Greg, I hope you get through it all today.
Whilst researching the colour scheme for my Gato overnight, I found that USN Submarines were painted according to 'Measure 9' in 1942. Measure 9 was dull black overall, although the hull below the waterline could be in whatever anti fouling paint was current.
The profile of USS Wahoo in Squadron's 'Gato Class Submarines in Action' shows the whole hull to be in dull black, so in the absence of other information, that's the ship I am depicting. There ewere no hull numbers, so it's down to the weathering now.
The conning tower's of these Gato class boats evolved throughout their long service life, and were modified during their service career. THe conning tower of the USS Wahoo in August 1942 matched that depicted by this kit.
Cheers
Tony