Please avoid BEY at all costs. It is very unstable there now and not friendly to US citizens. I have close family friends who live there with dual passports and they are refusing to fly there from the US!
Have you considered a "throw away ticket". Use it for your outbound and just not show up due to unforeseeable issues like illness, etc. Would that save you money if you book a RT and just not use the return?
I too live in the Nashville area and have a great award travel agent who has saved me tons of money and discovered great award flights. Feel free to PM me for that info. I get NO perks or discounts by advising this, just a very satisfied client who I have referred them to friends.
Good luck!