I read a lot of groups, and almost 10115463547347367589706033523462% universally when somebody posts, "Want to sell as lot. Will not separate, and I MEAN IT DAG NAB IT," the first 5-20 response are, "Well, let me know if you decide to separate."
It's a nice thought to just get out clean, but unless you are willing to take a huge hit on value it's pretty unlikely.
Most of the groups also do not allow you to post eBay links. You have to list ON THEIR GROUP. If they didn't, I'd suggest posting your stuff on eBay one at a time as you have time and list your eBay link in the groups. You can still sell on eBay though.
I don't know. do we have a classifieds board here? Yep looks like it.
https://www.tackleunderground.com/classifieds/