I keep extra cartridges on hand so the tenant doesn’t have to wait.

That will determine how much extra time you have. 

If you were doing DMM, you'd be sending out a lot of extra mail for no good reason. 

if its not above 10 or amount you cant manage, i wouldnt worry about using certain programs because thats just extra expense.. 

I am fine putting extra cash in as well.  25%, 30%, 40% even if thats what it takes. 

Regardless of knowing that you can close sales with the same tactics you can pick up women, I have always tried to go the extra mile (uh...cough.. only with sales.) 

Find something like that, maybe convert a basement to add an extra bedroom, etc.

I don't have children and am a huge dog - guy and pretty much allow all my tenants to have dogs... even PITBULLS which are so prevalent down here, I have extra umbrella insurance to cover this precise breed.So, it's 3/8 and I haven't heard from them... the non-touchy feely one texted me Saturday and said she's been busy and doesn't take well to threats or demands, which is the line I used on them when they started barking orders at me.   

As long as you have the income and structures in place to support it, this investing strategy seems like a fantastic way to scale without having to put any extra money down and just make more money (assuming of course that you're okay with the leverages).

But the lessons in this book have me wondering if finding a good REIT to invest my extra money each month into may be a better idea.