So I want to be overly prepared, my bet is we are looking at at more than 3 months of closures.

There's opportunity to be in had in any market and I bet a lot of smart people are going to make a lot of money if it dips.

Grace but don't be too soft hearted - we don't run non-profits.I bet unemployment wont cover all their rent and food etc.. in my mind landlords should be coming up with a plan.. the we are not charity is not going to play well .. flip side is your investors you knew the risk you took counting on someone else ( tenant to pay your bills) thats why proper reserves are a necessity in the rental business.. for situations like this.. this should be no issue to a landlord who has proper reserves.. 

Investing in stocks could be a much easier way to place bets on the next few months. 

You could sell it to their attorney as an insurance policy to get their fees paid, since I bet a lot of the seller's assets are frozen, because of you know...drugs money

I bet it's not more than $50 and if you pay 5-10k in closing costs then it takes a while to make that money back! 

The best bet is bank financing or private lenders.Yes you can sell an owner financed deal anytime and pay them off.

And if it does, lower prices might not represent a "deal" when adjusted for the reality of the fundamentals.  

Why not just adjust re-fi rates only up...?

You might need to expand your geographic area, or do a number of adjustments to the comps, but they should be out there.