Filing a Final Return for a Multi-Member LLC

We started a Multi-Member LLC in early 2019, but we did not end up using the LLC. I ended up dissolving in early 2020 in January through the state that we registered under.

 

I have a few questions about the 2019 1065 Return

  1. Even though the IRS doesn't require an LLC to file a Return with $0 Income, should I still play it safe and file a "Final Return" and Distribute the K-1s showing $0 to all the members?
  2. Can I make this the final return? Or would I have to file another one next year since it did not get dissolved until January of 2020?
  3. EIN Number: We never applied for an EIN number because we did not end up using the LLC, but the TurboTax software is requiring an EIN Number. I already dissolved the LLC, so I do not believe I can apply for one with the IRS just to file this return. Can I file the 1065 return without an EIN?
  4. Social Security Number: This is somewhat of a silly question, but one of the members is overseas and off the grid until after the March 15th deadline. Can I simply leave her Social Security blank on the 1065 for now? 

Thank you.