No free weeks, no reduced deposit, etc.

This means that if the bank forecloses, and you can’t pay it off, you will lose all of your money with no recourse to anyone.One option to secure your loan is if one of the partners has a free and clear property worth significantly more than your loan.

No you don't need a license for those jobs.

Do you have the funds to carry the payments if no one is renting it ? 

The issue is that if they say no, and no one else bites, I've shot myself in the foot. 

I guess I’ll have no choice but to use dscr 

Business Continuity: If you invest with partners, a properly structured key person insurance or buy-sell agreement funded by life insurance can ensure a smooth transition if one partner is no longer around. 

The seller showed a letter from the previous Building inspector stating that there are no coding violations and that all the 6 units have certificates of occupancy.

In the latter I've found many wholesalers who get a client to sign a contract with little to no explanation, leaving the client in a bit of misunderstanding about the process. 

I will get a counter offer usually and I will say no thanks , but hang on to my offer in case you change your mind .