A lawyer might be able to answer this better, but most rentals fall under fair housing laws (there are exceptions) and that protects against discrimination based on familial status which means children or someone who is pregnant.

However, my work involves a lot of late nights and it’s starting to take a toll on me, especially with two young children.  

Challenges?

General Partner is elderly fatherb.  12 Limited partners - all children , spouses not included - cheaper by the dozenc.

Challenges?

. $7k sounds more reasonable but I think setting 5 to 10 years for you and your sister to reach Financial Independence and quit W2 job (assuming you also have W2 job unless you own a business or are a real estate agent) is really challenging.

But at current prices and interest rates, this will be very challenging unless you go to cheaper areas or nearby suburbs that are cheaper. 

Any unique challenges?

Crime and drugs still an issue, but getting quality tenants has not been a challenge... so far so good.

to be clear - lots of other issues, lots of other challenges, and BRRRR is difficult right now with interest rates so high.