If it does end up getting pulled ask for a temporary.. I forget what the dentist called it. It's basically like a partial denture but one tooth. Won't stop the bone loss in your jaw but it'll keep the teeth around it where they should be. Dunno how much they cost but it's a hell of a lot less
Since it's on the bottom you have more time to think about/possibly save up for an implant. On top you need more bone (it gradually shrinks where a tooth is missing over time) for an implant screw because that's where your sinuses are