Best of luck
Is your current loan an FHA or VA? If it is then it should be an assumable mortgage. You could offer it for sale, no money down to a qualified borrower on the current rates and terms which you have (even if the rate is not as low as current rates, the old mortgage insurance factor could result in real savings). If the potential buyer is not currently credit worthy (The loans are qualifying assumables meaning the buyers must meet credit guidelines) it would make a could lease option deal.
Since you are out of town you will want to engage a professional property management company who can assist with finding a propsective tenant as well as collect rents, handle maintenance issues, etc. I would highly recommend you contact Deca Realty (314) 631-3306 (ask for Marty, Jim or Angela) and they would be more than willing to provide you with some valuable guidance.