Walk your neighborhood and talk to people and see if anyone is interested in selling their house.

So do you like taking long walks in front of beachfront vacation rentals?

University towns can be dangerous, but I'd stay within walking/biking distance for best returns and occupancy rates.

After I sold that SFH I still walked away with a nice profit after paying off HELOC and mortgage.

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You Definitely want to walk the streets of anywhere you plan to invest in the city...there are some great areas to invest but don't just trust the pictures or street view!

I ran some numbers myself and although your repair and maintenance estimates are a bit low - I doubled them in my calcs - I also added the vacancy rate of 7% cause I always like be more conservative in my calculations - further more , to be sure its a good deal , you really should add the management fee cause otherwise you are making calculations based on you always managing the place yourself - ( which you may plan to do anyway ) however - I like to calculate what the cash flow would be if you had to walk away from the day to day operations and bring in manager   -  That being said - It looks like you are looking at roughly 934/ Mo in cashflow or $11,220 a year yielding you about 15.6% Cash on Cash return the fist year  - not a bad deal at all.

Again, we'll ask for 30 days to do walk throughs of each property, meet the tenants, determine the status of each rental, verify current market values and ensure that its a great deal from that perspective.

You need to be in command and control in this business or they will walk all over you. 

Walk streets, call on properties for rent and see what they rent for, go to your county appraiser's site and see what the rentals you called on were purchased for. define what sort of real estate investing you want to do.Define your goal, which should be more than, I want financial freedom.