Hoping for some advice from the community.

I'm talking to an owner of a business that I believe has potential.

He is a salesman type and gives off an untrusting vibe. 61 years old, said he wants to retire. I think he still has energy and I'm concerned he'll start another similar business after a transaction. He sold one business in 2013 and started this company immediately after (what's to stop him from doing it again). Trying to find ways to derisk the transaction.

Here is what I've come up with:

1. Have him pay for the QoE
2. Get R&W insurance
3. At least a year of employee agreement
4. Decent amount of seller note that is forgivable

Anything that I'm missing?