To some extent, experiments have been done that provide some fairly convincing evidence for #1-4.
1. Electrical measurements of brain activity during anesthesia pretty much disprove this one. During heavy anesthetic, the neurons stop communicating and become fairly quite electrically. They become even quieter if you cool the blood.
2. This is a mostly guess, based on electron micrographs of frozen specimens. When the freezing is done perfectly, the details seem to still be visible. Also, an experiment has been done where a slice of brain tissue was frozen under exotic conditions (by exotic, I mean conditions that can't be reached for an entire brain with existing tech), and the cells came back online and started communicating again upon thawing the slice.
3. This one is a major problem. It is hoped that the current procedures are fast enough, but faster would be better.
4. This is based upon a set of assumptions that are fairly solid. Assuming no civilization ending catastrophes, the tools that will be capable of fixing you are almost certainly possible in a technical sense. One caution : the kind of tools that will probably work would be able to "fix" your body from a technical level, but philosophically it is hard to argue if you survived. See, the way to fix it is to slice your brain into many small slices, and to scan these slices at extremely high resolution. Software would reverse most of the freezing damage, and construct a graph in memory of the state of your neural network at death. A hardware emulator would be loaded with this graph, and that's what you'd be - a very good emulation.
5. This one's just a gamble. No one can predict the future with certainty. One thing that IS absolute, however, is your fate if you don't pay the $100k. Not a penny of that money will do you any good anyway, so...