I just had a skim-read of that PDF. It is full of masonic waffle. I am not an astrophysicist/astronomer (that would have been fun, except for the late nights!), but the references to ancient symbolism, although interesting, were a bit off the mark in places.
That said, it could still be a real object in space that is going to disrupt things when it passes us over. The problem with "certain" events is that the powers-that-be are well placed to profit from those events, especially if they are of astronomical proportions. The 3DD is fair game and worth preparing for, but this is more than likely full of disinformation.
As for where to buy real estate? Never buy at the seaside, always on a hill and ideally with an underground spring or somewhere where the bore water is safe to drink. That's just commonsense!