I'm probably part of the generation for new buyers coming, and some of us are internet savy on the differences in building materials (at least in my area). 

I did get an application from a couple that seemed very eager, loved the place, but my spidey sense went off about them and doing a bit of internet sleuthing, I found out half of the stuff on their application was a lie, their current “landlord” was really her sister who they were living with, etc… Dodged a bullet with that one.

I would target a neighborhood that is big enough for you to concentrate on that one area - get really really great at one square mile, for example.I would spend enough time in the neighborhoods to determine where I wanted to live and where there is the best opportunity for appreciation and clustering properties.  

You can also use the internet to target, maybe follow up with a phone call..it's no longer a cold call if they have your information.  

What is the best, and cheapest, site on the internet where I can download the forms I need to sell land by owner? 

You all know hot the world of wonderful internet is.

The market for non-internet using landlords has to be shrinking.Keep innovating.

All information below is from the internet per the seller's statements and income statement and rent toll.  

It all depends on the investors emotional relationship with leverage if leverage makes you stressed and the pain of leverage exceeds financial gain then sure you'll try to reduce leverage even if it makes financial sense to keep debt or add more.Nowadays with the advent of the internet, systems, full service property management companies, and technology bills/payments can be taken care near seamlessly with little of your intervention.

I like to concentrate more on electrical and plumbing being the stuff that keeps you up at night!