That is COMPLETELY bogus.Not because someone owes nothing on their house will the chances be greater they are in desperate need to sell their house for far below market value.People think that a list is some mystical legendary scroll, that magically increases the chances to get a lead.It is utterly ridiculous.Yeah sure you can combine the criteria, and hopes you have better chances.

An outdated unit rarely rents for as much as an updated unit.

At this price point on a mobile w/land - be advised your end buyer will need to either have cash (very rare) or be able to get financed (less than 10-15% of banks will loan on this).  

If market rent is currently at $2,600 both sides combined, then that is a shortfall of -$274, not a great choice in my opinion. 

It is VERY rare that you will get sued for backing out of a deal. 

This is rarely the case. 

Use a combination of marketing efforts.

It also has to take in to account things liek property age, state/local property tax rates (I pay less on 3 x $300k Vegas properties combined than my brother pays on his $400k house)  insurance rates for that area, (I pay less than 1/4th in Vegas compared to MN) type (my $600k townhome in MN is $400/year, my $300k house in Vegas is $650).

Pay what's owed when the bill is due, there is rarely a benefit to paying it early. 

If the company is big enough to survive being closed and they’re important enough to rehire That would help.Assuming a standard 3x income rule they were making over $100k combined.