It's a pretty long, annoying process to become a member, but I'd recommend it if you'd prefer not to die.
I have a $300K policy that covers the $200K suspension and a $100K fund when I wake up. I'd recommend insurance even if you can afford to pay the $200K out of pocket because there's less legal risk that the funds might be tied up in litigation. I got my policy through the only Alcor member insurance agent, Rudi Hoffman, and if you're interested in cryonics, he's probably the best introduction you can get. His number is (386) 788-3773.