I did try to read the entire manifesto, I really did--but, well, got bogged down after the first page or two. But from what I can gather, it wasn't just seven wives, but 49 (each of the 7 wives were to pick 7 sisters).
He's going to end up in a special unit, just like Dahmer. Dahmer didn't last very long after he requested he be let out of the special unit. Nope, it's not going to be nice for him in the Big House, not at all. And it's no skin off my nose.
I'll have to go back and read that part again. I thought I understood it to mean he would have 49 children from the seven wives, 7 children each. I'll read it again, though. Admittedly, I was scanning, it was such drivel.