HK, the decision to donate an organ, or have surgery in general is a very personal decision and certainly not one to be made according to the opinions of strangers. One would need to discuss such a major decisions first and foremost with your family and posek.
To be able to save a life is truly an amazing gift and mitzvah but that is NOT the ikkur in this decision. The ikkur in this decision is to have the support of your Rav and your family. Without complete and total support, it is not something to consider. On the other hand if you have the courage to do it, and you have the support necessary, you do you homework on the subject, and you work with a reputable organization, all I can say is I tip my hat to you.
Oomis once again I have to say we think alike.