Youre not selling any vintage guitars, are you? I dont have the money for the 'Old Wood', but definitely check around before you let go of anything too quickly. Some of that stuff has gone absolutely insane in the last few years. I cant buy, but Id be happy to help you find some reputable vintage guys or help figure out what some of it is worth.
Id say $35k easily for the S. List it a $45k and take the best offer from overseas.
To paraphrase another seller that i saw list a car here recently:
Id start the engine and stick my face in the fan before I took less than $35k for that car.
Good luck!