On the other hand, with the stocks being cheap, banks had started buying their own stocks.

Those that felt the need to hoard that item (no idea why) already did and soon the stores will be stocked and a lot of people have a 4 year supply so won't be buying more soon...Probably the same with cleaning supplies, hand sanitizer, bread, milk, eggs, flour and some of the other "empty shelf" items.

Typically, in situations like this I recommend considering that you sell your properties, do a 1031 exchange, and redeploy your capital into a larger MFR.

You can read the prospectus of a publicly traded company and decide which stocks to buy and sell.For you and your business (both disqualified) to put energy into marketing, which involves capital expenditures and a good bit of "hustle" is where it becomes problematic. 

Finally- contemplating a 1031 exchange on the property anyway in a year or so and thinking that incorporating is pointless if that’s the plan.

Lots of businesses, including grocery stores, are also hiring to help stock, if tenants are looking for a quick job. 

In the modern investing era, the stock market has averaged a 10% annual return.

Also they almost always have everything I need in stock or can get it to the branch I want by the next day.

I have 2 homes under contract, but I am using more leverage than normal in order to stock pile some cash.  

If you don’t have any other use for the cash (other than make no interest in the bank or a you don’t like the stock market, whatever...), then leave your cash in the property.