With those funds - I purchased (in full with cash), numerous investment properties.I focus on nice-sized condos or townhouses in high demand areas with good equity growth.

That is a large increase in demand and population, given the size of the market.The population growth and diminishing developable land almost guarantees price and rental rates increases.

On wanting to scale, maybe farming out some of the PM work to someone else to allow you freedom on other tasks. 

Congrats on your growth and much continued success!

After getting crazy expensive bids from contractors, I decided (naively) to take on the task of being the general contractor myself. 

You can get into houses with little to no money down, you get an extra pair of eyes validating the deal for you, you have someone looking over your shoulder making sure you and your contractors are staying on task and you don't have your personal residence tied into the deal in any way.

So I tally all of these transfers for 2019.For syndications (round numbers), I had 1 exit in 2019 that produced ~$6K of income and ~$20K of growth on my initial capital invested.

Places great to consider are Spring, The Woodlands, Tomball, Magnolia and Conroe due to its rapid economic growth.

I would like to generate good monthly cash flow in a low risk area with good capital growth, with working families and young professionals as tenants.

Keep in mind my strategy is for buy and hold, so I am looking at long run factors.I evaluate areas with either 1.New growth that is rife with young professionals or 2. established real estate value that will likely only go up. from there, I will run the property though 3 filters: Cap rate, Cash on cash return, and profit margin.