I'm not following your story, but being that it's irrelevant in regards to your ability or inability to quarantine, I'll just leave you with this...
Not a good idea. I personally wouldn't risk buying a collection in which a few, if not several snakes died over a short period. I definitely would not buy and resell a collection in which a few, if not several snakes died over a short period. It would be a risk to my snakes(even with quarantine), and it would be a risk to any buyers' snakes. As for recent IBD outbreaks, I do not need to hear of them in order to know that it is out there.
Do what you're gonna do, but be well aware of the risks. My concern would not be so much for your snakes as it would be for the snakes of people who would buy from you.