If you are planning to sell them yourself, I recommend you just begin "chipping away" at your collection and setting a goal of listing "X" number of items per week, per month or whatever.

If you want someone to take them off your hands that is an entirely different matter. There your decision is whether to consign or to sell them outright as a lot. The more important decision, if you go this route, is who you choose to use.....IMO, there are some very good and some very bad choices out there!!

Good luck!