Hi,
I have that same model and can probably help out as you move along. The table dimensions are easy to figure out since the table is designed to convert into a berth, fitting perfectly into the lips on the edges of the dinette seats. Something like 1/2" thick is about right. The support leg I have is not the original, and I am not happy with the solution. What I do like is that the 12" or so of the table closest to the keel is designed to fold down if you slide the support leg in about 12". This gives a little more elbow room when you don't need the table space.
Cushions: I can describe what the factory cushions are like, but I think there is a great deal of room for improvement. There were several decisions that were made that don't make a lot of sense - at least in my 1972. Maybe they improved on this later. My main complaints are:
- The starboard aft quarter berth is covered by a single cushion. This makes access to the lockers underneath a pain. I feel like there should be one cushion over the locker cover, and another over the rest of the berth.
- On the port side quarter berth and seat, the cushions are divided, but not in the right place. Removing the seat cushion leaves the long berth cushion overlapping the end of the locker cover by about 6".
- And, this cushion is meant to go on the dinette table to convert that into a berth. It is substantially longer than the other cushions. It's still functional for that purpose, but sticks out into the aisle a bit.
- In the V-berth, you have to lift both full-length cushions up to get at the locker underneath.
So, I would just make the cushions to your liking. We're completely redoing ours. They're 40 years old, so it's about time anyway.