Buying MF in Dallas, Houston, San Antonio, or Austin, Texas?

[Joel Bowen]

My main primary goal at this point is to purchase a buy and hold multifamily property (3-4 units). This will be my first investment. I plan on house hacking for the 1st year with the goal of cash flow of $100/door or more after i move out and to gain appreciation. 

I am not really happy living in Portland. I was born and raised here, its just to wet/cold for me. i don't mind rain but every day is to much lol. Luckily I am able to relocate to where ever with my job. I have done quit a bit of research and I have narrowed down that I would like to move to the state of Texas (mostly for investment purposes). I have narrowed it down to either Houston, Dallas, San Antonio or Austin (including surrounding areas of all cities).

My question is this, if I am looking for a multifamily (3-4 units) with cash-flow and projected appreciation (I know that is a lot to ask for lol), what would be the best areas in Texas in general to start to narrow down my research locations?