And it seems that all the BPOs I see are on commercial property where comps are VERY DIFFICULT, properties like marinas, event centers, rural warehouses, etc.  

If so, it seems like having a few DSCR loans would make it difficult to qualify for a Heloc on a primary residence or even a car loan, for example. 

Honestly, making the right decision to sell and allocate it somewhere with higher returns is even more difficult than buying.

I know that asking for general figures to use for estimates is difficult, but I was hoping that there was some general guidance to use when doing a quick, initial pass, knowing that it could vary when really getting into the details and project.

@Richie Linnon if the unit needs renovation, which is likely with someone there that long, perhaps plan to give tenant 3-6 months’ notice as it will possibly be difficult and stressful for them to find something in their budget and they may need time to apply for and be accepted into assistance programs.

MTR and Section 8 are very different niches with little in common so it's very difficult to provide advice on your question.

There's literally anything and everything, so to compare it to other good markets for house hacking is difficult due to the fact that other 'good' regions usually come with less job options and therefore in my mind are less secure.

There is exceptional volatility in politics today, making it very difficult to lend any direction of prediction with any level of accuracy.

It is one of the more difficult processes to perform when taking over a property, raising rents, not causing distress for the resident base. 

We also have absolutely insane tenancy laws designed to protect tenants and make landlords' lives difficult.