The folks here are dead on. Your biggest challenge will be finding a small multifamily property. They are not very common in DFW. With an SFR, you would be relying on mortgage pay down and appreciation to enable you to implement BRRR. That means you might have to stay in the first house a bit longer.
In 2013 we turned our first home into our first investment property. By that time we had owned the house for 10 years. During that time period, our salaries increased allowing us to more aggressively pay down the mortgage, refinance and save for the next down payment. After that, we were able to speed things up by saving a 20% down payment every year. It's okay to start slow.
DFW is a great place to invest, build a career and raise a family. If your heart is set on a small multifamily house hack, research Fort Worth. If your focus is on getting a discount you may want to consider a geographic area where small multifamily properties are more common. Good luck!