Growing up a neighbor of ours had a Novi42, before Jaws came out Named the Antigua. Remembering the layout of the lower cabin of that boat and the Orca has been very helpful modeling the forward cabin and V-birth. You're very right about the 3 beds. 2 beds in the v-birth and one in the forward cabin that transforms from a bed to a 2 bench seat table. I don't think the Orca had that option as the side of the bed is solid with pull out drawers. The Antigua when the bed bench seat seatbacks were upright, there were 2 swinging door that became the table supports. they were the same shape of the Orca main cabin bench end piece, except upside down. You're right about the kitchenette, Hoopers bench. It's all covered up in the movie, but i'll bet you there is a stove top under that sheet. I still can't tell if to the left of Hoopers bench is a toilet or sink. It seems to be the toilet as it has the lock down on it so water doesn't splash. If it is, that means the movie crew moved it from the head (the room in the V-Birth where all the junk falls out) into the forward cabin. The Bulkhead wall of the forward cabin has that little window. That's to air out the bathroom in the v-birth. I remember as a kid playing with my friend on the Antigua with that window. I'm sorry to say you are wrong about all 3 portholes being in one room. they are not. 4 in the forward cabin 2 in the v-birth. In the V-birth was the head(bathroom) and on the other side a very slim (half the size of the head) storage door. storage in the v-birth was also under the beds on either side. At the very front of the v-birth was another access hatch that could be unlatched and pulled out to have access to the bow. Lighting in the forward cabin of the Antigua and Orca of course were very different. Antigua had 2 small bed lights in the v-birth, on what would be the headboard. Main cabin had two hanging lights, one on either side. all these lights were on pull strings. There were 3 other lights one in each cabin that were on light switches. these lights were the main cabin lights. 2 can be seen on the Orca in the movie.
I don't know what Photos you have of the Forward cabin and V-birth area of the Orca. The guys at Making the Monster Don't have them. I've been talking with them for quite some time. I refreshed his memory of you about the Interview you had with Joe Alves and the Photos. He looked in vein for the photos you're talking of and could not find any of them. He was actually upset saying that would be something Jaws fans would love to see.