@Havoc - Registered on Tiger Gaming with "Darkhoodness". I wish you the best of luck with this after the work you put in.
@MM - As I was saying, you can press F3 to view your coordinates and manually write down your x, y, and z to mark stuff, though I dunno what the problem with dirt towers are if they're only temporary. Shame Rei's minimap mod with markers isn't part of normal MC.