I've put up with tenants who are slow payers but I know that's my choice.

YES, we may be a little biased, but check out our blog here on BP comparing Detroit to other cities and Deep Dives on Metro Detroit cities & neighborhoods: https://www.biggerpockets.com/...

This can be a slow going process to start but once you have a good portfolio of properties the equity will be there to scale... doing low down payments and variable rate mortgages etc. is risky and doesn't leave enough skin in the game to do much with. 

I'm planning on fixing it up during the slow / winter season and start airbnb'n it as soon as the nice weather hits.

But when inflation starts to slow down or reverse, and when interest rates start to reverse back down, those will be some good signs for the market.You need to pay attention to inventory too.

The low-After-Renovation-Value, "hood", slow response, and distance (I'm in PA) concern me. 

Then, he went off the deep end with his personal problems, and went into rehab (14th rehab).

What if someone is really slow in getting stuff done and another is a whirlwind?

They are slow on their credits of payments.

@Joseph DiBernardo I'd slow down and throw the "rules" out of your mind.