Kurt, I can look at something a number of times befor it sinks in.
Let me ask this: are you at all worried about taking the (let's call it) spaciousness of the cabin away by having the long counter/stowage on the starboard side?
I ask because I'm looking to do the same by raising of platform levels in 338 and I'm really worried about stuffing the old girl like a thankgiving turkey. I want to sit at the dinette/chart table and look out all four windows. That raises the seat up maybe 6". And taking that as the double bunk conversion height, it makes for a lot more stowage, but at what cost?
338's bit of quarter berth that sticks into the cabin is too low to sit on (except when getting in and ducking under the bridge deck), and would only be accessable by moving the ladder and bending the dinette seat forward. If it is used as a berth you could raise your knees. At least I assume so, not tested with cushion.
Your drawing has me seeing 338's portside opposite the dinette having something very similar to your starboard side. Maybe something not as wide following off the galley - a workbench, double wide shelf, like that - but still enuf cubic space for a double bunk coming across the aisle.
But it could still a good idea to have a single fore and aft seat where one could scrunch down in with head under the deck. Assume bracing oneself on either tack.
Anyway.
Wondering what your thinking might be on our cabin viz roomyness? I worry about it.
338 may have even more of her compression bulkhead removed and a laminated ARCH bent in - as a way of getting more side room and somehow incorporating the Vberth wholely into the cabin. In fact, the height of the Vberth brought into the cabin as the platform/seat datum. 7", I think.
Raising the bar, er, bunk, so to speak.