It will help justify any credits or discounts you are asking for (Lower than asking price offer). 

First, that investor telling you of a minimum IRR doesn't have a clue, IRR is rather irrelevant especially to predict, no one really knows what the IRR will be until the future.If you're going to look at the IRR, that 5K isn't your total investment, it's an additional 5K you put in to restructure your financing. 

Would it be against the law to copy those few lines and add it to ezlandlordforms lease?

Just make sure you screen tenants properly, and they will be a welcome addition to the neighborhood.  

The family does not have the cash to dump in the home in order to renovate it the way it needs to be so my advice would be for them to seek out an investor to purchase the home for a discount "As Is". 

Additionally, you could also choose to keep the house with the option of foreclosing on the property and take full possession.Does that help in any way?  

You have to also account for all the additional repairs and costs that would go into all the units to make it rent ready.

How many additional properties could you have bought if 75% of that money was yours instead of the banks?

In my instance, I let them out of a contract but asked them for an additional month's rent and security deposit.  

I'm a developer/ high end real estate solutions company for purchasing, selling and renting in 4 states on the northeast coast, and we are presently seeking a source for hardwood floors at discounted or deeply discounted rates.