(b) The landlord may sell or otherwise dispose of the property 28 days after the landlord receives actual notice of the abandonment, or 28 days after it reasonably appears to the landlord that the tenant has abandoned the premises, whichever occurs last.

I know this is of course not the way you envisioned your house hack going, but given the way the situation occurred, you clearly are not in the wrong.

And have some cash reserves for repairs you may have to do on the property and any other discrepancy that will occur. 

Driving for dollars, website with SEO, networking at events, auctions, telling everyone you know or come into contact with what you are looking for, making relationships with agents, wholesalers, and other professionals, direct mailers to potential motivated home sellers, etc.

Or you can directly meet with them by registering to real estate events around you: https://www.biggerpockets.com/forums/521-events-and-happenings 6.

I'm sure they'll have events in your area as well

Then there are events, like weddings, where groups of people stay often 3-5 days to prepare, attend and then recover before going home.

You need to understand when the reassessment will occur, how the valuation will be determined, and if a sale will have any impact on when the reassessment will occur.

If you encounter me in the wild (a networking event), I am usually happy to spend 5 minutes to get to know you and you me. 

Or you can directly meet with them by registering to real estate events around you: https://www.biggerpockets.com/forums/521-events-and-happenings 6.