Can try to reposition to Class B, but neighborhood may impede these efforts.Vacancy Est: Historically 10%, but 15-20% should be used to also cover tenant nonpayment, eviction costs & damages.Tenant Pool: majority will have FICO scores of 560-620 (approaching 22% probability of default), many blemishes, but should have no evictions in last 2 years.

I suspect I will throw more money at a problem Airbnb has no interest in covering

But for large multi-family, that amount hardly covers your legal fees for one transaction, let alone down payment, due diligence costs, lender fees, other closing costs, etc.

From what I’ve read in The Economist, short-term construction loans or hard money financing could be a great fit to cover the $90K needed.

The portfolio covers itself.

We recommend you get management contracts from several PMCs and compare the services they cover and, more importantly, what they each DO NOT cover.

Fund of fund raisers need to do a much better job including descriptions of both double promotes and possible implications for LPs investing through a fund of fund vs directly.

Assuming you don't have a mortgage that requires a certain level of insurance, you can get a stop-loss policy covering all the properties. 

Morby says something in his groups that isn’t covered here.

I'd suggest using a minimum of 25% of gross rent to cover expenses on paper until proven otherwise on any given property.Only you can decide how much cash flow is acceptable but I wouldn't consider something that essentially breaks even.