B. This is a great idea, and we get to buy in to the business when the construction on the building isn't even finished yet. That means it's quite undervalued, since most people buy what they can see, and not what they can imagine. I have to endure some technical issues, and there is a genuine risk that things may all fall apart before this is ready for prime time, but I am willing to take that chance and deal with the inconveniences because I'm getting in for cheap at the start of something that could be quite revolutionary and lucrative. Not only do I stand to gain significantly as an early adopter, but I am also able to influence the design and trajectory of this project through thoughtful input.
EDIT: And this thread is full of responsive, intelligent people, including the devs, who are willing to help solve whatever problems I encounter.
I choose B. I hope you do, too.
+1 That's why I'm here. Anyone have any suggestions of other "B" type opportunities? I'm still waiting for Etherium to do its pre-sale.