Alternatively, get creative with finding the cash.

Alternatively you may decide not to address the capex but be prepared to deal with high frequency maintenance requests with duct tape repairs. 

Alternative Financing OptionsIf you and your partner prefer joint ownership from the outset, consider these alternatives:Conventional Loan: Purchase the property together with 20% down (or 15% for multifamily in some cases).

An alternative to batteries is a "water battery". 

Alternatively, are there some ballpark estimates for each expense item (e.g., 8% for vacancy, 3% for capex, etc.) that can be factored in as realistic or worst case scenarios when analyzing the deal?

If arrears feel overwhelming, selling is the safer option to avoid foreclosure.

Other Suggestions: Are there alternative strategies I haven’t thought of that would allow us to move legally and responsibly under the current circumstances?

I should have said "safer" and "more stable". 

On the other hand, if you’re looking for flexibility or control, or you prioritize high resale value, it’s worth exploring alternatives like small multifamily properties or single-family homes in areas with broader market appeal.Coming here to see if anyone has suggestions or experience to share is a great first step!

Alternatively, do you think it might be better to use the 200k to make down payments on higher-quality homes, i.e., ones that are almost rent-ready, and finance the remainder of those purchases with DSCR, etc.?