Re: Stripping - start inside or outside?
Wouldn't you complete the hull repairs before starting on any finishing of the interior, thus avoiding re-work. So I think that means strip the hull, fix as needed, prime then progress to the interior. This will also mean that the interior remains clean and as dust free as possible once finished.
This approach gets all the really messy work out of the way first. There may be an argument to paint it sooner than later to stop it drying out, but to my mind it's moisture content will be too high to get a good bond everywhere.
That's a hell of a gap on your dead wood. It looks similar to some areas of mine, but up nearer the stem on mine. What's your plan to deal with that?
Restorer of Sunshine Bridge
When you tell life long friends what you've bought and they look at you like you need a therapist, you've had your first Wooden Boat moment. Probably the first of many :-)