Is anyone noticing that oil is crashing? 

In this scenario, sure the owner makes a bunch for essentially financing it for you but you're not plunking 25% down up front and the paying big interest only payments each month.

Besides, if I can borrow everything (25% from line of credit and 75% from portfolio lender) for the MF, that is essentially "no money down" and my return in infinite. 

You could offer the tenants "cash for keys", essentially pay them to leave early before their lease is up. 

Have them recommend a routine maintenance schedule, advice you on existing issues, and give you an idea of what might happen in the future based on the systems you have.On wells, you will essentially follow the same steps but you will be using a plumber.  

When you flip a house you are essentially a house dealer.

You could, essentially, live for free. 

They generally do not.While I found his attitude a little insulting (essentially saying that all tradesmen go out and drink their paycheck Friday night and are too hungover to work on Saturday), I did like the concept of looking at what they are invoicing for, comparing it to the quality and quantity of work actually done, having a few days to make sure it jives and then cutting checks.  

and it's 100% essential that there's an airport nearby (for work). 

Essentially I assigned the deal to him, and then he assigned it again to the end buyer.