US Immigration from Ukraine

Hi We have received AOS2 approval (3/31)and so we are at NVC. So am I correct that I should be calling NVC to get assigned number to my case? Should i be "shopping" for the embassy in Europe that is the quickest? Ukrainians are being filtered through Frankfurt but I think i read on here that it was a slow go because of the volume. Are there particular embassies that tend to be quicker. Geography is not a problem as long as she can get there on a Ukrainian passport. You mentioned seeking expedited review in the Consulate. How does one go about that? thanks

Some background: I live in USA, and I have one year of college left. My girlfriend lives in Ukraine and is done with university. She speaks English too if that matters.

We had planned on getting engaged this summer in Germany and then I would start the normal process for her to come here by filling i-129F for her to get a K-1 fianc visa.

Now given the situation that seems impossible. I'd like to get her out of there as soon as possible, and she wants to also. Is there an easier and faster way to get her here?

I am pretty new to this and it's a bit overwhelming so I was hoping someone on here could give a bit of guidance.

Thanks

What all documents to be submitted for the evidence of support for K-1 visa apart from below? How much the embassy scrutinize this document (I'm not trying to fake any part of this document)? Also, can I digitally sign this document or have to be printed and physically signed?

Has anyone been able to schedule their Visa interview in Frankfurt for their Ukrainian Beneficiary ? I see wait times for non-immigrant visa's in Frankfurt are 21 days, and in Warsaw 3 days (https://travel.state.gov/content/travel/en/us-visas/visa-information-resources/wait-times.html) Frankfurt was going to already be an inconvenience and my case is still at NVC (was just assigned case number last week). Was considering having NVC transfer our case to either Rome or Warsaw as we both have friends there.

Good Lord, the US tax code is beyond idiotic, but that's a subject for another day. So I save ton by filing jointly, however my wife is waiting on her green card and we submitted the SSN application with the green card. My understanding is that because she is a NRA and we are trying to file jointly (huge savings) she needs a SSN or ITIN. Well I'm pretty sure I read you don't apply for ITIN if you are eligible for SSN so what the heck do I do here? Just file an extension? Can I just attach a letter saying we're waiting for her SSN? Anybody that can tell me, I'd greatly appreciate it.