I do pretty decent for my age, and I live at home still, so I've been saving up a lot of money.

First off congrats for looking into this realy estate stuff at such an early age! 

Hi everyone,I’ve been fortunate enough to acquire 32 rental properties by the age of 30.

Hi @Keetaek HongNort Dallas is expected to have a great appreciation rate, however overall Dallas on general round the high end.We can see cities in particular but that will depend on factors that you are yet not looking at, for instance age of the property, property class, etc.Your summary gives me an idea that you are looking for a class A or B properties.SFH are in high demand so looking for a good deal in North Dallas is challenging, so you have to analyze what you would and won't do.MFH is challenging on the sense that there is scarcity.

China as a low cost producer is past- they have aged and standard of living out.  

All rents you get from this property has to go back into the SDIRA but if you get a 20 year mortgage (that the rent can cover) and can pay the rental off by age 65 you will have turned that $90K into several hundred thousand’s of paid off real estate.

You start by mentioning your age... you'd need everything to go just right for the rest of your life to make, best case, $400 or less additional each month net cash flow. 

Many of us on here wish we were thinking about real estate at that age.

Many others on here have said the same thing, but at your age i'd focus on career.

This comes from several data points, the first being the average age at which people are choosing to stop renting and buy their first home.