What entity structure is best for my specific real estate investment needs?

I like this platform on BiggerPockets which allows people to connect with one another in a structured manner.

Crime is a concern, but I'm thinking with the appropriate limited liability and insurance structure this could provide a reasonable shield.

However, I’m not entirely sure how to structure a syndication for these larger deals.

I’m a 21-year-old college student majoring in physics and economics, I am the president of the Commercial Real Estate Club at my University, and am preparing to enter the investment banking industry after graduation.

Per square foot can only be used for a gut rehab in the same neighborhood with no structural or other environmental anomalies...so almost never.

The clear and obvious answer would be to instantly pay the back taxes and offer a small lump sum for them to move with and just lowball in whatever structure works for the both of you weather that is a better sale price or a greater monthly payment to them and just find your middle ground that works out for you both.

It has 2 detached structures and one of them includes another half-bathroom.  

if Yes, what should be the structure, should he live rent free in return of the work and hours of work he provides?

This structure can provide liability protection and potential tax benefits.Consult with a Lawyer: A real estate attorney can help you form the entity and ensure it's set up correctly for property ownership and management.2.