I would not recommend pocket listing, infact some realtor associations frawn on pocket listings.
Best of luck to you!
Then have your listing agent put it on the MLS with all the nice pictures. Yes, definitely have your agent offer it to your tenants. If they can't or won't buy, open it up to the general market. To keep your tenants happy, explain that their lease will be honored. Require in the MLS remarks that interior tours be scheduled AFTER you have accepted an offer "subject to inspection"
So, that's my suggestion. Best wishes to you.
Of course, you need to review the lease and ensure that you are able to sell the property unencumbered by the lease.
Feel free to contact me if you would like to discuss this more.
Market theory says that you have a better chance of finding the person who will net you the biggest profit if you expose your property to all of the prospective buyers in the marketplace. Keeping the information "in your pocket" would not qualify as "total market exposure."