My 1959 Topps PSA 8 quest is...over. Now what?

[Oil Can Dan]

I started collecting the 1959 Topps BB set in PSA 8 or better in 2004. I would lose focus for a few years here and there but for the most part I always had an eye out for things I needed. Now, 18 years later, I think I'm done. I have all but the Mantle although a few cards are high end SGC and even one GAI. I wish I had pulled the trigger on the Mantle long ago but I did not, and that card has skyrocketed into the five digit range which is too rich for my blood.

I have loved the set and loved the ride but now I think I want to sell it so that I can use the proceeds on something else (I'm thinking about the 1956 set in perhaps a lower grade).

If you were in my shoes how would you go about selling off this set? The Auction houses seem like a good fit if I want to sell it all as one, but it also seems like I'd get more if the cards were sold individually. I don't have time to sell them individually but I understand there are cosigners out there that I could use. And I just poked around the buy/sell pages here (which are awesome) but that also doesn't seem to work for 571 individual cards.

What would you do?