The Knox Metro Area is diversified, stable and growing but it is definitely income limited as to how much can be charged for rent and housing.

Theoretically from a demographics perspective someone looking with a junior 4 would be looking for that because of the family needs which feels to me like it could translate into a more stable tenant and less vacancy than a single professional. do you think its worth the investment at this time?

It's a stable area that I would certainly live in.  

I am looking at off the shelf plans to be executed so that I know the estimates of building costs and holding costs much more accurately. 

I only own 2 Sec 8 properties and have far less experience than @Jeff Rabinowitz above - but when I compare  my experience on these 2 properties with my other non sec 8 properties - I have found that the sec 8  have been more stable and tenants more cooperative on all fronts.

Ryan its just antidotal but I see folks get all excited about buyinig there little rental house and they buy something in a sketchy neighborhood not really knowing that what you just shared in PIcs is a very lickly out come if things don't exactly go right.. and maybe they should have bought in a nicer area.. suffered less return on investment but had a solid and stable investment.I fund a lot of guys that play in what your showing and describing the big difference is they own and run them ..

From what I've read if you get into the $1m+ range and the property is stable and cash flowing you can get a non recourse loan which is what you want for your protection.

Otherwise, as I understood my VA lender, they want 2 years of "stable" earnings in order to qualify you. 

That was November 2015 and the home was empty upon purchase, so it took some time to get 2 stable, well-vetted tenants.

I have included some rental stats that might help you to understand that rents are really good in Osceola County ( Kissimmee), and you will definitely get more bang for your dollar in this popular stable neighborhood.