My experience is that most tenants are able to do that math if they have been renters before, and know if the overall rent plus whatever utilities you are including - is a good price or not.I agree that if your phone is ringing off the hook, you're definitely in the ball park. 

When is the wedding?

Stop by on a Wed or Thurs and the guy that teaches the class even wrote a book he'll give you for free detailing the whole process with charts, graphs and actual conservative examples of how practical this strategy is. 

I've learned that what I value or don't appreciate doesn't ring true for my applicants.  

When you cross good buildings with good tenants, the only time your phone rings is when the tenant needs a reminder of where to send the rent! 

They live together now and their wedding is in 3 months. 

They can dig and rings of dead grass appear where they urinate.

The business line is presently forwarded to my cell phone but can be set to ring at home; it also goes to electronic voice mail which is emailed to me - very handy when I am out of the country.

You could ask when the wedding day is?

She's creating sugar art for weddings and so each one of those take days to complete.