You will learn a lot of the do's and don'ts BEFORE you own a property which would be of great benefit.Then, when you are old enough get your RE License and do that.. even part time.Follow a path like that and by the time you are 25 you will have tons of great industry experience and be well on your way to success. 

trulia.com - look at crime rates, street views of properties, GIS driven data for house values, previous price pointsrentometer.com - use free searches to determine average rent in an area based on the address and number of bedroomsIs the property generally rentable or sellable in that area?

My average COCR was 10.6% (with one exception). 

However, I needed the cost of living to be at or below national the national average.

I’ve done three purchase in two different states of 30-80k type properties and closes costs have averages 4200.

He wants $395k for 5 units. the gross monthly income ranges from $500-585/mo/unit...it averages to about $567mo per unit.

This is something I've really struggled to understand.With the average annual household income still sitting around $55k, and prices of new builds/old homes shooting up to where anything over $350k is no longer feasible for these households, does that mean the rental market is essentially "capped"?

There is no penalty to withdraw or payback early and the best thing is that the interest rate is whatever the current G fund rate is, which has averaged between 1.5-2.5% the last 5 years! 

National average for residential is in the 5% range.

On average I am hopeful to be at much higher than your number (as it should be for the risk) but maybe not and I have certainly had my fair share of war stories.