OMC Sail Drive
Not more difficult than most sailboat that size! Have you seen a sailboat that size with inboard that was easy to access? I have a C&C27, with the famous Universal Atomic 4. You got to go on a diet a week prior to working on the engine.
I heard the OMC saildrive are reliable and you should not worry about them too much. I know someone who has one, and he had water backing up to the engine. the engine stalled and filled with water. I heard of a drain plug on the exhaust, does anyone know about this? Perhaps you could buy a used one, and save the parts for the future!