I currently work a 9-5 job and live at home with my parents to save money.

The brother also could have a legally cognizable title interest because under the Texas Intestate Succession Statute the property belongs to siblings if both of the previous owner's parents are deceased and their are no surviving children. 

There is a priority  (spouse, children, parents ... so if there's someone with higher priority, the filing may well get bumped). 

My thought would be to buy the primary residence to after two years turn into a rental, but I would prefer to buy a rental first as I am able to live with my parents to save money for the time being.

My biggest mistake was moving out of my parents house.

Airbnb does not withhold the security deposit, you can request a security deposit but in case it has to be used, the guest has to accept the charges and at that point Airbnb bills them for it.

One opportunity would be to see if you parents would consider helping you buy a home in East Lansing for you to live in and then rent out to your friends!

Typically the parents of these tenants will be paying.

I also like to be present when showing the units (or have someone I trust like my parents) so you can really see who shows up, how they show up, etc.

Who it really hurts is the middle class, especially when your parents leave you their house or worse yet the family farmer inheriting the farm.