I wouldn’t approach the seller right away with the idea of seller financing. I would first establish trust.
If the seller could, they would prefer to sell their asset for all cash. Typically seller financing gets involved when they don’t have many other options.
There’s no such thing as a free lunch. If you are able to get seller financing, you probably would be paying more for the asset or possibly more in interest than what the bank would provide.
Depends on your earnings but I would be cautious naming someone a “CEO”. I’ve seen other small businesses give elevated titles earlier on, and have it come back to bite them when a true “CEO” is needed.
You should establish a regular meeting cadence with your operator.
You should also monitor important KPI’s to your business at a regular interval, which you are likely doing already. This is arguably more important now because you aren’t going to be there day to day.
In terms of functions you still hold on to, think of ways that the operator could bankrupt the business. Then think of systems you could implement to prevent the risk from materializing. If you can’t think of a system, hold on to the task.
I would suggest listening to some Acquiring Minds podcasts. Some episodes that come to mind include one where a highly paid tech executive bought a towing rescue business, hired an operator day one, and kept his job (with Matthew Saskin). Also one where an accounting firm owner bought a tree service business and hired someone to run it (with Landon Mance).