Hey Tate, I am not totally and expert, but I know Paul Younger is an attorney that has done a ton of Tax sales and getting them with salable deeds.
1. I believe yes, however, it is a special warranty, and you have to clear up the title. I think the previous owner has a couple months to pay back, but you would get your return back if that happens.
2. I would suggest not doing that until you clear the title.
3. Again, I would get that clear title, and I think that takes 5-6 weeks. (I would ask an attorney)
4. Once you have a general warranty deed, I think you are good to go.
5. Title Company can help with this, however I am pretty positive it isn't a guarantee