US Immigration from Zimbabwe

Hi everyone

I live in an African country and i have been dating my boyfriend for a year he is a US citizen, we met online through a mutual friend but we have never met physically (covid got the best of us) now that travel restrictions have eased up he is set to come and see me in 3 months and the plan is to get married in my country. Now my question is is this a wise decision or we should just do the k1 visa as opposed to the CR1? What would be the faster and realistic visa to obtain?

My fiancee is from Zimbabwe, but they scheduled her interview in South Africa. Her passport was stamped through April 8th and she had her interview on February 16th. She passed everything, but they gave her a 221g because she needs to still submit her South Africa police clearance. She applied for it back in December and we still haven't received it yet. Right now they are holding her passport at the embassy. Is it going to be a problem if it takes longer than April 8th to get her police clearance?

After you get married and you are filing for AOS, are you supposed to include the Work and Travel Permit Forms in the entire package or are you supposed to send those out separately? I noticed there are different processing times on each of these, so I'm just making sure.

My fiancee is a citizen of Zimbabwe, but has lived in South Africa for several years. I requested that her case be sent to Harare since she is a citizen there, but it looks like they are sending it to Johannesburg instead. Since she is not a citizen of South Africa, will this affect her approval in any way?

I received my second NoA from the USCIS about a month ago and in the letter it said it would take the NVC about 2-4 weeks to process. Should I be on the lookout for some kind of confirmation in the mail or are they only sending the info to my overseas fiancee?