I'm afraid 1. just doesn't work, at all - if you can save more lives by being an organ donor, and you think this is the right thing to do, this is an entirely separate question from how many lives you can save by giving money to VillageReach, and I don't see how the answer to one can have a bearing on the other.
If you save thousands of lives by giving away money during your lifetime, then on the day you die, the relevant question is still: can I save more lives at the margin by being cryogenically preserved or by donating my organs? Unless you think of saving lives as some sort of competition, rather than as intrinsically a good thing to do, the answer to this question is completely unaffected by how much money you gave away when you were alive.
Edit I now realise the suggestion is to give away extra money when you die, but this just has exactly the same problem. You don't get extra money by freezing your body.
NB - I'm not saying I really believe the objection is valid, I'm just saying that your proposed solution really doesn't work.
So... sign up for the "head only" cryonics. All your organs get donated to others, and you still get cryonics, because nobody gets a donor brain.
You could still even donate your corneas...
Edit and have just read further down the comments to see why this is not optimal...
An exercise:
Name something that you do not do but should/wish you did/are told you ought, or that you do less than is normally recommended. (For instance, "exercise" or "eat vegetables".)
Make an exhaustive list of your sufficient conditions for avoiding this thing. (If you suspect that your list may be non-exhaustive, mention that in your comment.)
Precommit that: If someone comes up with a way to do the thing which doesn't have any of your listed problems, you will at least try it. It counts if you come up with this response yourself upon making your list.
(Based on: Is That Your True Rejection?)
Edit to add: Kindly stick to the spirit of the exercise; if you have no advice in line with the exercise, this is not the place to offer it. Do not drift into confrontational or abusive demands that people adjust their restrictions to suit your cached suggestion, and do not offer unsolicited other-optimizing.
To alleviate crowding, Armok_GoB has created a second thread for this challenge.