Which renter should I choose?

[Akshay Saxena]

First-time renting my home. We have two possible applicants. Help me think through the pros and cons to determine whom I should rent to:

1. Candidate 1: Single recently divorced person with a 65 lbs pitbull. Getting $450k from a home sale and willing to pay entire year rent upfront. Good credit score (800+) but low income ($70k)
2. Candidate 2: Family of 5 (3 kids) with a business + a smaller dog (40 lbs bulldog) and ok credit (680+) but higher income ($130k) than other candidate. 

For Candidate 1, my main worry is the big pitbull. My insurance company says they exclude coverage for exotic animals and any dogs with a bite history. They do not have an excluded dog breed list. Neither of the dogs have a bite history. 

Who would you choose? Thanks for your help.