I will accept your statement that you cannot afford cryonics. You are not alone. Even $30,000, while cheap compared to some medical procedures, is simply out of reach for some people. My philosophy is that we should find very inexpensive alternatives so that we exclude nobody. I think chemical preservation can be done for $1500, $800 of which would be used for long term storage. We're talking about maybe 2 cubic feet of shelf space here with no required maintenance. Since the $700 is mostly labor, and the $800 might generate only $25 per year, it can even be reasonable to accept charity cases because it does not create a financial burden on the cryonics provider. Charity cases would not put current patients at risk. We're talking about an approach that truly excludes nobody.
If I remember correctly, you are only middle aged, right? So keep watching, keep learning, and keep planning. If a company does begin offering storage of chemically preserved brains, plan to take advantage of it. Until then, your best chance is to somehow convince a funeral director in your area to embalm you. The immersion is important, because without full immersion, the embalming fluid will stop working in about a few weeks. If the funeral director won't store you in perpetuity, perhaps a family member will take on that responsibility. You could later be transported to another facility, although someone would have to be assertive because of the complexity of shipping toxic liquids across international boundaries. You might research that to help lighten the burden for your caretaker.
Immersion in embalming fluid would be far better than any of the 3 alternatives you are currently considering.
