That sounds pretty good! This site has a handy guide for pet sitters that might have some more helpful info.
https://binkybunny.com/BUNNYINFO/tabid/53/CategoryID/24/PID/940/Default.aspx
I think my favorite thing from it is for the pet sitter to do a “health check” each day (or twice a day since he will be living there), where they offer the bunny a piece of cilantro or another favorite treat (not too much of course). If the bunny doesn’t eat it or leaves it on the ground, then they know something is wrong.
Will he have to actually handle them? If so, it would be good to teach him how to safely do this, and practice with him. I usually don’t have my pet sitters handle the buns, but I have showed them how to get them in their carriers in case there is an emergency.
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The answers provided in this discussion are for general guideline purposes only. The information is not intended to diagnose or treat your pet. Seek the advice of your veterinarian or a qualified behaviorist.