Definitely check SOL before doing anything. On a debt that large, if SOL isn't out, I wouldn't wake the sleeping giants unless I could pay in full right away. If SOL isn't out, they have right up until last minute to file suit and I wouldn't be suprised to see them do that.
You can offer a PFD. (Pay for Delete) You do not have to offer to pay in full, you can offer a settlement amount in exchange for deletion.
What is DOFD?
The older it is, the less I'd offer in my first offer. Start low and you can negotiate with them.
But even with a PFD you run the risk of them rejecting and waking up and filing in court.