You might be interested in reading some other breakdowns of the conditions required for cryonics to work (and their estimates of the relevant probabilities):
Break Cryonics Down (March 2009, at Overcoming Bias)
How Likely Is Cryonics To Work? (September 2011, here at LW)
More Cryonics Probability Estimates (December 2012, also at LW)
You might be interested in reading some other breakdowns of the conditions required for cryonics to work (and their estimates of the relevant probabilities):
Break Cryonics Down (March 2009, at Overcoming Bias)
How Likely Is Cryonics To Work? (September 2011, here at LW)
More Cryonics Probability Estimates (December 2012, also at LW)