Advice needed on whether or not to rent to someone!

[Dianna Marble]

I could use some advice on a potential tenant for our rental unit. I am going back and forth on whether or not to lease to them. A couple came to look through the unit and wanted to submit the applications to lease it. I received the application that only the wife filled out, even though I gave them 2 applications so that we can run credit and background checks on both tenants. The application I received was filled out but, not in full. She didn't fill out a few areas including her current landlord's phone number. The husband warned us that his credit is not great because of past medical bills. I let them know that I would need the husband to fill out the application as well and he did and sent it to me right away. I then asked for proof of income, which ended up being slightly different than what he indicated his income was on the application. On top of that, during walking through the unit, they told me that they had the security deposit and first month's rent available immediately but, I happened to check out the wife's facebook page and she had set up a GoFundMe page to help with the deposit and moving. The GFM page said that they haven't been able to save any money because he husband wasn't working. I ended up asking about the GFM page and she said it was an old one she made last year that just happened to update. (Keep in mind that the page said it was created 2 days prior and was specific on when they had to move.)  Also, the husband is working but for a temp staffing agency. So, lots of red flags for me. I am wondering, am I being too cautious? Am I overthinking things? I seriously HATE being lied to. I don't want to jeopardize our investment but I know there is no perfect renter out there. With this situation, would you rent to these people? 
***Please be kind with your responses. I am new to this business and still learning. Thanks!***

[Jennifer T.]

Originally posted by @Dianna Marble:

Thanks so much everyone! You are all right and I appreciate your input. I have let them know they we are declining to lease our property to them. I don't like that the unit is sitting vacant but I would rather wait for a decent tenant than have to deal with a nightmare of a tenant. Suppose I need to be a little more 'thick skinned' in this business. Thanks again! 

I knew this and did it anyway.  Accepted a tenant where something just didn't "quite" feel right.  Not even red flags, but a few pink ones.  Because it was July-August (worst months in my area for finding tenants).  I was having trouble finding the right tenant and sick to death of showings.  I let my guard down a bit and signed a lease with the only horrible tenant I have had.  I would have been SO much better off just being patient, even if it took me another month.  They were con artists down to their bones and had even falsified documentation I had required for their background check.  Broke their lease by moving out in the middle of the night in the 4th month...of course, the "move out" happened one day after rent was already due.  Leaving the place filthy and damaged.

Just for the cherry on top, they stole the following items:  all the curtain rods, a bath tub fixture, and the USED AA batteries out of all the smoke detectors.  Seriously.  The freakin' batteries.  That's some dredging down into the bottom of the pathetic barrel.  Just like those nightmares you fortunately avoided with their GFM page to apparently help them pay their basic living expenses.