Post list on this site, ABUA, Warren's site, Craig's List, and e-Bay. It's your time and money.
I would look at my equipment, take what I need out and donate the rest to the local LL. Write off the donation, like new. End of "clutter" in 1 DAY. Just providing another option.
Considering just how much stuff you may have, you may want to copy and edit a list from the following thread to save time at the keyboard.
You know you have too much . . .