As you talk to legal counsel, you might possibly ask if you could get a tax shelter of some kind - it may not be feasible, but sometimes colleges will take donated real estate, for example, and the pay an annuity. So say a farmer had a piece of land, it increased to a million, and wants to avoid capital gains. In some cases donation of assets can result in doing something good for an institution but also getting ongoing income out of it.
Not sure it applies to capital gains with options/alternative minimum tax, but a tax lawyer might know.
If the tax bill does turn out to be like the price of a car, aside from taking some form of legal action, or if it fails or is not possible, then you can make payment arrangements, so that in theory, paying off the tax over time will maintain your ability to keep hold of the asset of the options.
Not sure it applies to capital gains with options/alternative minimum tax, but a tax lawyer might know.
If the tax bill does turn out to be like the price of a car, aside from taking some form of legal action, or if it fails or is not possible, then you can make payment arrangements, so that in theory, paying off the tax over time will maintain your ability to keep hold of the asset of the options.