Reminds me of my brother's boat. He got his 9meter cruiser in pretty good shape with a blown motor (due to maintenance issues). He and his best friend spent a winter changing the motor and refreshing the drive. His wife was large and in charge of cleaning and polishing so that today they have a vessel that they are proud of and is a lot of fun for them.
He is just now bringing it out of winter storage. He figures it is just as good to shelter in place on the boat as in their house... They have plans for a couple of trips on the Columbia River (where they live).
A big project, but a very worthwhile effort with a huge upside. Good luck to you!
Thx for sharing. :)