Thinking about parting ways with my A body, give me opinions on what I should ask for it.

Well, eventually , you will kick yourself in the *** for doing it IF you don't replace it right away with something else you've always wanted . If you don't have plans to do that, you will probably be disappointed with the amount of cash you got and that **** will disappear so fast and you'll be even more pissed and upset.
So , my opinion is you better get at least 20 large for it or don't sell it