We use an insurance product to replace the security deposit.

You’ll need money to pay for lawyer fees, deposits, repairs and have funds for unexpected repairs/maintenance as well as unexpected none payment of rent.

Shall I take the 1st and security deposit money and hope for the best or stop advertising and wait it out?  

You’ll need money to pay for lawyer fees, deposits, repairs and have funds for unexpected repairs/maintenance as well as unexpected none payment of rent.

Also, if you are holding 1 months security deposit, you may be able to use that, but check your state laws.

They have a deposit of one month.

Better an amicable split (with you, if not between them), so you can get in, verify no damages to give them deposit, then to have them hang on for months and not pay (and maybe do more damage).There are people still looking for housing and ways to show/sign leases with minimal risk, so better empty and rent it out again than months of known no pay.

Aside from appraisal coming in lower and your financing being denied these two are only reasons you can legally walk away and get your deposit back.

This will keep you out of court.Also, I don't bother with a security deposit, just the 1st and last month's rent. 

I texted "We moved out on the first" they did not contact me so I'm changing the locks and keeping their deposit.