You're right, "Banger", this is going to be great. However, modifications are going to be flying hot and heavy.
I plan the build two versions of this thing. The first will be a Guppy IIA, Tench. When that's done, I plan to do the same boat "as built", making use of the left over 40 mm and 5" guns from the first kit.
As for the differences between the Balaos, Gatos and Tenches, no big deal. Just keep the guys with calipers, micrometers and tape measures away from your model. Limber holes will be tedious, but no big deal.
And, at least there are good ship's plans of Bang, out there. I'm going nuts, researching and trying to remember, my boat.
Mike K.