IMO this is much too little additional return to put your personal residence at risk.  

Not sure the cost of this for you but I feel with hot tub and fireplace you already have a lot of warming options and not get much additional revenue.

The only additional thing we do is send them to collections.

So you have to weight risk to reward.. and sometimes we have to eat one that we bought it happens..

Additionally, his credit is not the best, and he has limited funds for a down payment.Any potential options or solutions that may be available?

You can cover the wire mesh with drywall patches (they tape on wall and across the wire, white/paintable, different sizes) as the wire mesh is what will prevent the rats from eating their way into the property (the covering material is cosmetic only).

It is our goal to deliver all of this in the RTR Academy along with a plethora of benefits to students to include:-VIP access to RTR inventory before the general public-ability to earn back course fees through investing & our attractive referral program-tax, legal & investing advice from our team of attorney, CPAs & investment advisors-no cost SDIRA or solo 401(k) account to invest through retirement vehicles -lifetime membership with no ongoing or additional fees, etc.!

Additionally, we are approved with the Better Business Bureau (BBB).

In addition, these markets are seeing both home values and rents appreciate.Cash flow from a property will depend on your down payment.

What do you mean you are paying $400 additional dollars more than what you are paying now?