Another site is Photorio, formerly APUG. They have relatively active large format, medium format film forums and a "for sale" forum.
There is a huge demand for film equipment right now so selling items won't be a problem. The main problem might be all the work in listing so much equipment. Finding someone like the already mentioned japan camera hunter to take them in bulk or perhaps to sell them on consignment might be best. If that part is already done I would list on Photorio, EBay and the others mentioned above.
Good luck.