best of luck to you, I am in the same boat, last few yrs I been thinning the collections, got rid of about 150 so far, and still seem to have a lot left , LOL
Armslist has been good for me to move things locally and not have to ship thus FFL's, as I rather a face to face sale and make sure the buyer is both HAPPY and legal to buy(I insist on transfers thru a LOCAL to me FFL, but saves me the shipping, and anyone possiblyt NOT happy!