Tenant Possibly lied on rental application?

[Sherwin Vargas]

Not sure what to do or if It even Matters. But here is the situation. I am renting out a single family home. I ran background checks and screened the tenants they seem like good people. Today I am preparing and organizing to get ready to shoot them over the lease to have it signed tonight and I notice something one of the paystubs for the company looks very weird. 

The company is her brother in laws business and she gets paid to do the books around $1200 biweekly. she has not proof of this income except for the very sketchy looking paystubs that she emailed me.

She makes another 2000 biweekly from a credible source and her husband makes 3k weekly from a credible source. Should I care that this one job seems very weird since they can easily cover rent ($1750). 

I know it will come up so I will just say it. They have not bought with this type of income because of bankruptcy back in 2008 (the crisis ) and they do not know how to manage their credit. Late payments on a few accounts typically less than a week and they open and close alot of credit cards as they use them. example open a walmart credit card for a big purchase. pay it off in a year then close it, opening a new one 1 or 2 years down the road.