For multifamily properties, this is often around 40-50%, but it can vary depending on the property's condition, location, and age.- Analyze Comparable Properties: If you’re working in a specific market, reach out to other landlords or property managers with similar assets.

Yeah, I believe is a good strategy depending on the loan you're putting together. 

It works...but any marketing works, it just depends. 

I have 880 credit score, decent savings, and no other debt except for 300K mortgage on my primary residence (worth $1.5 million).

It all depends on the property you are considering.

It depends on the deal and the risk profile.

And depending on where it's at, it could take $100K-$200K for the down payment.

But it will depend upon how much you really need that $140k in cash flow right now.   

Depending on how close I was to having 20% equity in the property and being able to avoid PMI, I’d consider using some of my cash to pay down the mortgage when I refinanced.

A series LLC allows for segregation of assets within one entity, though its benefits depend on how well other states recognize and enforce the structure.