It does say the settees sleep 2 - I guess they were thinking kids or midgets.
They sure did a good job though.
You should be able to cut a hole in a bulkhead (as long as it has rounded corners) without a structural issue. My starboard settee has foot space in the hanging locker forward as it is short as well.
How deep is the sink? If it is shallow enough and the drain was not in the way that might work.
I wouldn't move the stove or re-model the head. Both would be quite disruptive and I see no easy solution there.
That leaves the starboard main bulkhead or the sink area.
Here are some pics of boats with this solution. First is the CS27 - I couldn't find a pic that showed it clearly but it is behind the cushion on the bulkhead at the left of the pic. (pic from Yachtworld)
The second pic shows the foot space on a Nicholson 32 on each side. (pic from Yachtsnet UK)
The third pic shows the same idea on a Nicholson 31 (pic from James Cameron's Atom Voyages site).
The English call them "trotter boxes)
All three boats are designed by Camper & Nicholson