You didn't ask this question to me, but I'd love to answer it.Interesting post. You've obviously given a lot of thought to this. Lots of creative ideas here, mostly achievable. One issue you didn't address was the inevitable traffic in white people that will arise. White women will still be prized by black men for sexual pleasure and this is only attainable by white men breeding white girls. Nice to fantasize about sperm banks and all that, but lots of people prefer the real thing.
Another thing. You said you're white. I understand why blacks want whites to be enslaved or even exterminated. But just out of curiosity, why do you hate your own kind so much?
In terms of justice.
Look at all the harm that our "race" did to the world, all the violence, we made wars for racism, we enslaved people, we killed with the excuse that we were superior and unfortunately we still do that, in the 21st century we still do all this, someday, all this evil we did has to come back to us someday, before anyone talks about Africa, a delicate topic but that needs to be said, look what we did with an entire continent, we destroyed, we explored, we installed chaos, and today we explore its rich and we indirectly encourage conflicts that never end.
We are worse than religious fanatics, because even the crusades had the ideology of being a war for the greater good (although war is never for good, but always for interests)
Anyway, this is my opinion and I apologize if I'm talking nonsense and even more, I humbly ask if anyone wanted to correct me, please do so, I'm here to learn to be someone better!