Some potential names, feel free to add others as you see fit.
A lot of the names on this list could fill various roles. I would advocate for keeping Michelle on as top Admin Expert, she really does her job VERY well. That office falls apart without her. I think everyone else should go with Charlie, no strings left hanging. I am excited to see who will step up and run. Rich and Jan would have my full support if they ran, and my full committment to help them in any way I can.
Best of luck to Charlie Webster. Whoever takes on recruiting would be wise to get Charlie's advice.