For some reason they aren't setting move out dates timely. 

Buying a poorly flipped house, in my opinion, can hurt a lot more than buying an old, completely outdated house.A few questions.

List it at the top of the rental market price and you will weed out most of the worst quality applicants.Until you have finalised your move out date you should not begin advertising.

You want to find a fair house in a great location that's discounted due to say old capex items, or dirty carpet, or an outdated kitchen. 2.

I've heard that it the BNB Formula course is outdated with info from 2015 or so. 

More outdated homes, still strong rents.

Do you have in writing your move out date?

You've been listening to podcasts of course and some could be outdated and not reflect the current market place.

The property is very old, outdated, and ugly, but both units are listed as being in livable condition. 

I also advise them, if they have been good, long term tenants, and have taken good care of the property, that IF they complete their move early and give up possession, I will start showing it immediately, and if I find a new Tenant will prorate their rent, potentially saving them a few days rent.Even when given a specific move out date, never assume that it will be accurate.