Sounds about right to me. Keep 15 %of it and sell, and give the rest away. It's like something that owns you.From experience get rid of most of what you have and keep what you will probably use. Sell it or trade it "as is" or for a higher price mill it to what will sell/trade. You've already put way too much time and effort in to it and if you keep going in the same direction it will not get any better You will feel a lot better with that albatross off of you.
That's my 2 cents worth and sincerely wish you the best of luck.