JB, that boat looks really great. Now to see to the stuff you can't see-- rigging, delaminations, wet bilges and electrical snaggles.
I would not worry about the 12vdc-- it's very easy to redo and to mount a nice panel. The best are from Blue Sea, also the most expensive. Before Boater's World went under I got two UP panels for WAY less than what WM wanted for the same thing. I made the whole shelf area over the q-berth into the electrical panel, including a small BS 115vac panel for the charger and outlets. I like working with 12vdc, it's easy and fun. For the 115vac I used an extension cord (I kid you not) and heat-shrunk marine connectors to it to hook up three duplex outlets. Where the PO had hacked-in a double-gang outlet under the galley (he had 10 duplexes if you can believe that) I cut an opening for a bookcase in the head end of the starboard salon berth. I probably have way too much electrical stuff on this boat, but it's not stuff that all has to be running at once. My two main batteries (under the salon berths) are fused at 30a each and I will never need a fraction of that. I have a separate battery for the engine starter under the cockpit as well. Right now I am debating where to locate the hourmeters.
With your concert-hall speakers you could make very nice panels of either teak plywood or just plain teak, cover the holes, trim round the edges and then mount nicer (smaller, modern) speakers in those panels. They'll look like they've always supposed to look like that. I built in speaker boxes at the forward end of the two fiddle-rail shelves over the bunks but have not fitted (nor selected) speakers yet so they are just varnished mahogany boxes. Oh yes, all my wood is mahogany, in and out, for I hate teak. Right now I am having trouble deciding if I want to try to stain the original 1974 fiddle rails to look redder, or just leave them teakish and varnish them, or else replace them with proper fiddle rails ala the Cherubini 44s (and every other boat we ever built, especially my dad's old 31-ft yawl which is the direct ancestor to the tons of Honduras mahogany seen on C44s -- and which had the same layout as the H25, from which I got the idea when my dad and Warren H were planning the H25, re: what Ed said... but I digress).
I installed even more thru-hulls than the boat originally had, for the pump-out for the 9-gallon holding tank, the inlet for the toilet, the galley sink drain, and the head sink drain as well as the speed and depth transducers, all but the galley one in the aftermost compartment under the v-berth. Where your port-side bin/locker is I have a sink and a lift-up cabinet next to it. My head door hinges too-- because I added a vertical post under the mast step on the forward side of the bulkhead. The thru-hulls I use are ONLY ever Forespar Marelon. I can't say enough good about them. The ones I got are the 'OEM' model (I have connections
) but the triangular-flange aftermarket ones are just fine as well. Moving that sink drain from the side of the hull to under the cabinet was one of the first things I did. You will find it does not drain on anything close to a starboard tack. Mine is almost vertical (all sink drains should be vertical first and then lead towards the centerline!).
I don't own a digital camera so I never have pics but I promise as soon as I get the cabin sole down and the Formica on the counter tops I will take some interior shots and post them here. I have been enjoying varnishing trim and painting bulkheads all summer but would much rather be sailing!!!