Note buying help for beginner

[Ronald Cooperman]

BP community- HELP!!! We have the opportunity to buy 8 non performing notes as of June 2019 on properties that are tenant occupied from a bank.  
The notes are 70% of the value of the properties. 

I ran tax liens and found several.

Our  goal is to buy notes foreclose on properties mortgage the properties and retain them in our portfolio. 

What due diligence should we ask for?

What would you offer the bank ?

Would you cherry pick or offer on all 8?

Any chance bank offer any short term financing?