and if the client would prefer, for example, a specific plumber, that's fine as long as they meet our criteria, which 9 times out of 10 they do.  

would love to see a seller finance specific calculator that has a option for 1031 exchange from buyer bringing in down payment.  

You can find something in Durham and parts of Raleigh, specifically zips 27610, 27603, and parts of 27604 that would meet your criteria, however generally speaking most of the inventory that would fit what you are looking for in Raleigh or Durham would likely be in neighborhoods that I personally wouldn't want to invest in, C- to D type neighborhoods.

Does that operational aspect have to devour all cash-flow, no not necessarily but it could, all depending on situation specifics right. 

I'd talk to brokers in your specific asset class and market.Do you already own similar assets?

Specifically, what research results told you these were two good cities to invest in?  

Rent control laws are market specific.

If you are looking to build connections specifically in the DFW metroplex I have been hosting a monthly meetup for the past 3 or so years, id love to connect and get you some more info! 

I've specifically learned a lot from Dave and Henry on their podcast, but also appreciate Jesse Vasquez' approach with her mid-term rental investments.

The two things that will determine the listing when you go to list for your specific house, it is price and condition.