Also make sure you have made a reasonable attempt to get the tenants forwarding address.

Don't think that should be attempted by anyone unless they've got some serious experience in the biz.

Any body have referrals?

Looked through the peep hole, it's no body I recognized, so I opened the front door to ask what she wanted.

You are obligated to attempt to mitigate the damages by trying to find a tenant to move in and pay some of April's rent. 

I do understand that everyone must live where they can afford, but I would always keep in mind that investors who buy in deeply depressed areas often do so because they don't have a lot of capital or experience; they mistakenly think that "cheap" is synonymous with "value;" and they grossly underestimate the actual expenses associated with the building.Many times, these investors get so far in over their heads that they cannot afford to maintain their building, so they end up doing things like assigning appliance maintenance to the resident in a desperate attempt to regain control of cash flow. 

I believe they embalmed and cremated bodies onsite.   

In attempting to follow the BRRR strategy I was thinking to refinance and take out some cash to be in a position to purchase a duplex or similar after we move.

That sounds like an impressive body of work; any interesting findings you can share with us?

And then find a new tenant if they break the lease and attempt to mitigate your losses.