I think that you might not have to destroy the extra snakes. You could sell them to people as pets but make sure that these people are not selling/trading or giving away animals - they would need to be people who aren't going to suddenly need to get rid of their collection a couple years down the line as well. They would have to be people who are known as established/stable and trustworthy. I have no doubt that you would fully disclose the situation.

The goal is to prevent the spread of the virus.
I know there are many people here and on other forums who do not breed/sell/trade animals who might go for one of these animals.

I'd like to think there are ways to get you out from under the extras without resorting to euthenasia. I'm sort of naive though.... so everyone should feel free to jump in on their opinions of this idea. I'm prepared to be shown the error of my ways if I am wrong

It would be ideal if you could manage to sell your non-pet balls under controlled circumstances and allow you to take the couple years off with just your pets. Then you can continue pursuing your dream