Just hope you keep it real. Most Nazi-victory TL`s ignore realism and get real crazy in the post-war period. Especially when they talk about the USA.
On first glance, it seems an interesting concept, but I think that you're going to need to find another PoD, this one related to finding a way to get Germany atomic weapons and a credible delivery system prior to the US pasting Germany into a smoking ruin.
Or alternatively, a PoD eliminating the American atomic program, somehow.
Here is the start of a T/L inspired by some recent reading I've been doing on Hitler's plan's for Europe AFTER he won the war.
Russian PoW’s (in direct violation of the Hague Agreements)