Is it a bird in the hand or two in the bush?

[Georgee Gilbert]

Which is the better  candidate? 

I have a applicant who is offering to pay one year up front in cash for rent. She is getting a divorce and she doesn't have a job. Her roommate to be is getting a divorce as well and doesn't meet the income requirement (shy by $600). She has been on her job for over 20 yrs and her credit score is over 700. They only want to sign a 18 month lease. 

Then I have a couple who want to rent for at lease 3 years maybe more. The boyfriend works two jobs. His 2nd job take him a little over the income requirement. He is recently divorced so his credit is in the low $600s and his girlfriend works as well.