Kjscrim, even though it looks like your equipment is worth $800 at KEH, that is far from the price you would actually get if you sold the equipment to them. A couple months ago, I sold KEH a SQ-Am (complete with orig. box), 80mm S lens, one 120 back, 2 220 backs, and a ME metered prism. I only got $180 for all this. The bronica "kits" on KEH are a bit overpriced compared to what you would find on eBay. I would estimate that your kit of bronica stuff would go for $400 or less on ebay.
I would recommend selling to KEH however, if you just want to get rid of all of the stuff at once, and not mess around. I have delt with them several times when selling my gear, and have bought (way too much) stuff from them as well. Always a good experience.