Thanks to all for your many helpful suggestions, strategies, and yes, many e-mail offers as I contemplate the unthinkable.
What makes this a excruciatingly tough decision is that the goal has not yet been accomplished: so many sets not yet finished and others not even started. And yes, in response to a previous post, I'm not the type to spend $1,000 on a PSA 9 common, but am the type to spend $500 on a PSA 8 star or RC. So that's what I set out to do: build a really nice, consistent NRMT/NMMT Topps set run, not spend my life building one an out-of-this-world example for the set registry.
Really there is no rush here, so I'm going to weigh a lot of the various options, many of which have been illustrated by the experts here. Also very much on the table: Keep everything, load up with insurance and keep going.
Who knows what the future holds?
Rob