I have been a landlord in New Jersey in the student housing sector for over 15 years. 

I am targeting college students.

If you're in an area that has a lot of college students then you might want to think about ways to create the standards you need to fell comfortable with this.

The biggest pitfalls I have seen among many of my peers while growing up in my 20s is that they tend to either get wrapped up in student loan debt, other debt, or lose aspiration in exchange for financial contentment.

I just want to find out what is best for student rentals?

I had to grow the budget over time.If I told you what works now, you'd be competing with my students.

The tenant has not met the requirements of withholding rent.If the tenant claims they have moved out, ask them to state that in writing (email or text is sufficient) so you can enter, remove their belongings, and take possession.

Attic insulation is one of those things that I am not sure how much practical effect there is, I only add attic insulation whenever the government subsidizes the cost, and after it's done I don't see any cost saving in my utilities bills (student rentals). 

Have you gained possession of the house?  

Congrats on jumping in atleast and buying, its farther then many masterclass students ever get.