There are numerous FDIC-insured banks that pay an interest rate of around 1.5% right now (Google "high-yield savings accounts").

So, for me I don't spend a lot of time trying to create numerous quality-levels of each unit type.   

Have your realtor run the numbers for you - you'll find quickly that there are numerous options out there which are "net net" cheaper that an owner-occupied condo/townhome/sfr.

There's numerous solutions out there to do automated ACH and most of them can be found on google by just googling "tenant ach". 

I did a walkthrough before closing and there was a bunch of junk still in the garage (numerous paint cans - some that were very old, an old microwave, and old door, cut drywall, half a bag of grout, and some other junk). 

I have put together numerous deals as an agent buying and selling with this and the FARBAR contract in FL.  

Its very difficult to enforce that on people you know for numerous reasons.

I imagine if I checked, I would find numerous complaints about this guy, but I don't have time to fight city hall.Thanks!

Aside from having trust and knowledge of the house flipper, being in first lien position, making sure you know the market/ARV of the property, and using a qualified attorney, what are some of the numerous other things to look out for?  

Yup the the time money freedom train will soon depart (with emphasis on train-ing and you are their victim...I mean trainee).Well... peruse your local library and you will find countless books on doing real estate you know Robert Allen and his "No Money Down..."