So it does appear to be possible to get an FHA 203k loan for a 5-unit & convert to a 4-unit.When possible, aim for the Limited (aka Streamline) 203k loan, as it's less complex, not required to get an FHA consultant, etc.Of course, this is based of the two following important assumptions:1)  zoning allows for this2)  and obviously I owner occupy for at least 12 months3)  the total purchase price + renovations are within the FHA loan limits specific to my areaWhat I'm confused about is the timeline or chronological order of the process? 

You may be required to make estimated tax payments when the property sells.It depends on what your 2024 total taxes due were and 2025 estimated total taxes / withholding / estimated payments are.If you pay in atleast 90% of the current year tax or 100% / 110%(Depending on 2024 income), you are normally considered good.You may want to consult with an accountant for more clarification.

Please consult with an accountant specializing in real estate taxation. 

I plan to consult a tax professional but before wasting anyone's time I would like to ask whether I can technically claim the property as a rental in 2024 even though our first contract started Jan. 1, 2025?

Downsizing a one factory town.I would expect if FedGov downsizes, a lot of the corresponding periphery businesses/consulting firms, etc shut down.There has also been talk of such things like FBI moving out of Washington, I think some of that has already been the trend, but may accelerate. 

you should file a proof of claim with the bankruptcy court. but first you should consult with attorney

For now, consult a CPA to determine the best structure based on your income and investment goals.This post does not create a CPA-Client relationship.

You should consult a business attorney in your state regarding this.

Consult a probate attorney

I think tax benefits should be secondary to buying something that would work well as a STR.I would recommend you consult a tax professional to see what possible tax benefits you could receive from buying this STR.