The head liner I am building will be a couple of removable panels in the main overhaed. I will build the same style to cover the underside of the deck by the settees. I should be starting on it here in the next few weeks after I replace the bulkheads I have taken out. The PO used different colored stains or teak oil in the cabin so I am stripping everything and going to varnish with an epifannes satin.
Along the hull I have seen some bahama 30s with teak slats that looked really nice. Shouldn't be to hard to clean paint install carpet then the slats over the carpet.
The windows I am going to install wont have that dumb molding ring. When my plastic guy cuts my new windows I am going to have him cut them an inch bigger all the way around. This is going to make rebedding way easier down the road like SD suggested. The countersunk machine screws will be every couple inches and should give the boat a more modern look. When I talked to Mark at Marks Plastics he quoted me around 225 per window a couple months ago.