Hardly any down, great rates, and your CoC is near infinite considering you didn't put much down.

I can afford the vacancy as I fully expect to be able to refi above my all in with a positive cash flow leveling me with an infinite cash on cash but I certainly want to get it moving so I can give more focus on the next.

Lastly, looking at this as a marathon and not a sprint, it might make sense for you to setup a Infinite Banking policy.

It was just delivered to my house and it will be my next book after I finish “ the infinite game by Simon Sinek

Sort of like people who leverage 100% and say, "I'm making infinite rate of return"....well, true, but that comes out to $100 on a $1 million portfolio....not as impressive, agreed?  

But even so, eventually a BRRRR investor will hit that DTI limit.But commercial mortgage... is that how large investors can keep acquiring infinite properties?

On top of it I get a life insurance for my family if something happens.There are multiple marketing names for this strategy: bank on yourself, infinite banking, ...

Based on the calculation you provided, the return is infinite which is awesome but this is only 1/2 of the equation. 

Cuomo has determined in his infinite wisdom that we can't get rid of deadbeats.

If you're more advanced you can start to do partial or full BRRRRs, and then you can get up to an infinite return.