My husband and I have an opportunity to purchase a single-family rental portfolio in our out-of-state investing market that is owner-financed.

We backed out of that deal because there was a freeze that hit Texas market, and that freeze caused a bunch of plumbing issues.

If you wish for each home/lot to have their own septic tank, counties or city code will usually require a minimum lot size (1/2ac - 1 ac min roughly). 

Go to Etsy and search for "rental property tracker," and you will find hundreds of nice spreadsheets to track 10-20 rentals, usually for under $10.Software has extremely helpful features like online payments, marketing syndication (click a button, and your property is advertised on multiple sites), electronic document review/signing, maintenance tracking, and owner reports.

@Marc Shin Beware of the ever increasing property taxes in the North Texas markets.

One thought is if what you are doing already is working why are you looking to move markets? 

I'd be happy to chat a little bit about various U.S. markets, and opportunities available south of the border.If you like the idea, then we need to pick a date, time and location. 

Is there a forum, on Facebook or elsewhere, where I can learn about the conditions of the real estate market in Mississippi ( I realize that each county has its individual situation, to a degree) and ask questions? 

Whilst I run to get my real estate license for the MLS I wanted to get somewhat of a feel for the market, what better way to do that then ask someone who's already invested. 

For example, are you experienced in social media marketing?