Best prices are going to come on eBay, like it or not. Selling to a dealer you're going to get bargain basement prices because the dealer has to build in a profit margin. Look at, for example, a place like KEH to see what similar gear is going for at retail. Figure on, perhaps, half of that at best as your price. KEH has a 'sell your gear' option where you can get an indicative price immediately. Might want to try that out.
Your AIS lenses will still work on your digital bodies so there may not be a need to sell those.