Tenant profile is young urban families with children, with often 2 working adults, and in corporate jobs.

What are the occupancy limits for unrelated adults in the city this home is located?

Louis area so I am essentially re-learning the city as an adult. 

You just have to make sure you're not discriminating against the protected classes (i.e. age, race, gender, sexual orientation, ESA, etc.)

Louis area so I am essentially re-learning the city as an adult.

I understand they have more tenant turnover, students can be rougher on property than more mature and possibly responsible adults, and that the summer is a high probability vacancy (shorter duration lease) as most STR tenants will want something better than student housing and it would be a pain to furnish/unfurnish for the short out of school year.  

Any advice is helpful and this would be for more kids that have graduated highschool or adults then just my brother and his friends, etc?

With 9 adults living in this house the utility costs are going to be much higher than would be for a typical family.What about lawn care, snow removal and pest control?

Do all the adults who will be living in the house have a combined income that qualifies?

We are all young adults that either are entering the work force as new graduates or are on our last years of college that are eager and see the importance of owning real estate.