SELLING IT ALL

Another vote for TMR The Music Room, on something like this they pay for shipping.

and since you are now getting interest from members of this site, check the buyer and seller feedback they have earned on this site…

Some good suggestions in this thread. I'd highly discourage you from using Craig's List for many reasons, mainly your safety and not getting taken advantage of.

I did not read all of the posts so forgive me if someone already suggested this but I'd encourage you to call around to audiophiles in Tyler and see if you can find someone to do an inventory for you. If you are part of a local church, can you ask around if you have any engineers, accountants, or folks who might be knowledgeable enough to take this on as a project for you? Maybe offer then 10-15% of the sales? I would hope you can find someone you trust and hand it off to them so you can focus on more important issues.  If you take @millercarbon suggestion, I'd sure ask a lot of questions about the folks who are going to sell the items of higher value. They are expedient but they may not have your best interest in mind. Unfortunately some of these companies are opportunists and will take advantage of you. 

Hire a couple of nerdy high school kids, maybe from band or something, and have them do the inventory for you.  Cheap and then you know what you have, what its worth, and can move forward with good data.  Make sure they log in condition as well.

douglas_schroeder " You will do MUCH, MUCH better doing so than selling to some liquidator or estate sale company!"

I have owned a high-end stereo store and now currently own an estate sale company. I take issue with your statement. The OP needs someone to inspect the items for sale and determine the operational condition. In our business, after that has been determined, a reasonable, researched price will be assigned to each item. This is how we do business weather it is a power amp, Stickley furniture, Tiffany lamps or a '97 Toyota Camry.