Find a realtor. During your interviews mention that you will sell or lease the property. Your realtor can get comps for both and let you know what you are looking at.
If leasing looks to be a good option put it on the market for sale or lease with a high listing price. Normal commission for securing tenants is one month rent but this may vary by area.
You will likely find tenants who want the house but can't quite qualify for the mortgage. Those types make good tenants because they have dreams of one day buying the house.
If someone has a cash full price offer, take the money and run.