@Dean Klein,please go to the nearest police station and if they like to talk, check what security firm has best relation with them and the activity in the area surrounding your target block.i think ADT will lock you into a 3 years contract, but they are a few other alternatives, wireless based, which you can move/install yourself. sorry my mind is gone today so no link/name.go to the local church on Sunday or check with the most involved neighbor on the block.maybe they are initiatives on the way like installing a city/semi-private camera  or neighborhood watch committee.maybe check with local police/firestation, maybe a recent rookie/hire needs a place.but on the lines of what @Al Williamson, said you are not a slumlord,you are offering nice affordable housing in a working neighborhood. so show that you belong there, be respectful, and walk with no fear and with a purpose.

She will not answer our phone calls now and only response is by text like "I am Okay" or " I am in church can't talk" , " Talk to daughter " etc .

Send them to their church.

Rate them all and choose the best fit.Religion is one of the discrimination factors, so do not let the same church/place of worship enter into your decision or be on any of your notes.  

I am not a bank, social work, church group, family member or friend.If you are a good tenant you will pay on time, If you can not I will do what I can to help you move to more affordable housing.Remember you do not have a good tenant if they do not fulfill their one primary responsibility of paying in full and on time.

The food is going to a local church and the clothes will go to Goodwill.

I also used to go to church with a couple that had 8 boys, and they were the best behaved kids I have ever seen. 

They are 6 single guys would like to rent my 4/3 SFR. 3 of them are college students and serving at a local church part time. 3 other guys also work for the church but full time.

Arlington, Alexandria, Falls Church, Fairfax. 

Richmond is a pretty hot market right now, especially in certain neighborhoods (Church Hill, the Fan, Museum District), but if you've got money, know-how, and time, there are a ton of opportunities to fix up broken houses for buying and holding.