Well, the weather dried up and it was low/mid 40's, plus I had some spare time to "play"! I've fully documented every step before & after in photos, and I'm putting each set of screws or nails into labeled baggies, because there's no way I'd remember it all by the time I put it back together.
First, I removed the side window stops & glass and removed the two visible screws hiding beneath. The aft ends of the windshield frame were still held by some invisible screws. I found holes under the outside edge of the gunwale where there apparently had been screws once, but no more. The top edge of the windshield frame had a single bung on each side (port & starboard). I used the trick where you drill a small (1/8" or less) hole into the bung until you find metal. Then slowly drive a sheetrock screw into the pilot hole. When the sheetrock screw bottoms out on the underlying screw head, keep driving slowly, and it pops the bung right out.
With that done, I proceeded to remove the bulkhead under the bow, and all but two of the windshield hold-down screws. Finally, I got the driver's seat removed and am on my way on the port side seat. Those things must have been built in place and never intended to be removed, given the contortions I had to go through to reach the screws attaching them to the hull!
SO -- what did I find that I didn't already know about?
1. Some rot on the outer keelson pieces where it meets the stem
2. Some rot on one or two frame ends where they meet the keelson in the same spot, port side
3. A couple of poorly patched frames (i.e. pieced-in, not scarfed) in the same area, stbd side
Beyond that, everything above the waterline looks stellar, and the front 3/4 below the waterline (so far) looks decent, other than the above items. I fully expect to see some frame end rot once I open up the bottom.
A few photo highlights, first the bung removal tip:
And here's the newly-discovered rot and frame patches:

