And I hope that is more future readers of this post, and on BP. 

There is some future Infrastructure improvements taking place, which can/cannot impact the property ROI. 

I'm very bullish on its future for real estate.

I will be sure to increase my rice in the future!

If not, you could focus on other selling points, like the acreage or future ADU potential, but a garage would probably make the property more competitive.

Will refinance if rates go down in the future. 

They are about to move out and I’m nervous to rent to a stranger in the future with this same policy.

Emphasize how this arrangement could work to their benefit, offering steady income, avoiding a traditional sale process, and giving them the freedom to move forward with their plans such as buying that sailboat and sailing around the world.If they ultimately decide they’re not interested in selling, you’re still in a great position to continue your search and buy your own property in the near future.

Good luck with your future endeavors! 

For future reference, what @Charles Carillo said is very good advice.