If the offer is good, what are you waiting for?
It seems to have great end-user prospects, but it's not easily monetizable by itself.
If you have a good offer, why not take that money and look for a great domain? It's a buyers' market now, so you could really trade up big time. Unless it's making you money now, I can't see the value in sitting on it.
Of course I'm biased. I went broke a few years ago because I cared more about profit margin than cash flow. My nearest competitor, who had huge negative cash flow, is still in business.
I say keep that money turning and don't look back.