I would imagine there are people that have slowly accumulated 5 duplexes that would ache for that start.

As I've done and so many before me but it is like a muscle, after you fail so many times you will learn and recover.  

If they aren't responsive during the sales process it's an achingly bad sign.

This kind of arrangement can be a head ache with 1031 but with a flipping business it can be advantageous to consolidate your activities and provide going concern for finance purposes.You don't need a MA accountant but you do need an accountant familiar with MA.  

One of my tenant inform me that she is switch banking, as a result, she need set up new ACH to pay the rent.

ACH: This is a direct deposit from tenant to a landlords banking account, is usually free to both parties but can take 4-7 days to process.

Just what I have learned so far will save me MANY of head aches and hundreds of thousands of Dollars!

When they are cahsed out its a bit limited how many homes you can get but for me at least I find it head ache free.

We're opening a business account with Chase, they offer ACH for a small fee already.

Or set up an ACH where the money is withdrawn from their account on a regular schedule automatically.