First of all, no kit is perfect and there is always room for improvement and changes.
I am working on the same Enterprise project. I originally planned to do a pre Oct-43 fit. Then the more I work on it, she is coming out as a post Oct-43 fit. There are a lot of mods than have to be accomplished. I guesstimate I have approximately 350 hours of work so far. A lot of this came from reworking or modifying of parts that I did but wasn't satisfied with how the parts came out. I have several books for reference but I am always finding and coming across pictures with dates and descriptions that don't seem to fit the picture. Some pictures are dated for the same period, but close examination of the pictures reveal minor changes so it's I guess a matter of preference as to how far I want to go with this. All in all though, she is coming along very well.
The hardest parts I had to contend with is building the forward and aft gun tubs that were added sometime after late 1942 I guess. It's hard to find good pictures of these areas, so a lot of it is guess work, especially the under flight deck areas. I am also adding a lot of underdeck frame work. Here to, there are no good pictures. Online references are a great help and I hope I don't offend anyone, but everyone who has built a WW II CV-6, seems to have a different interpretation as to what she actually looked like. So here again, it's a matter of preferance as to how far to go with the mods.
I do have a question that maybe someone knowledgeable about the Big E can answer. There are a couple of pictures in "Warship Pictorial Bk 9", pg 39, the bottom picture. Right about the very center on the port side, there is some kind of frame work that was added and most of the AA guns along the port catwalk are missing. Is this a post Aug 45 mod and what is the frame work for?
Anyway that's my two cents. Hope it helps!
Bob