Best way to pay for complete roof project?

[Orkeem Davis]

I'm in the process of having my roof completely replaced on one of my rental properties.  With that being said, I have been mainly scheduling appointments with companies that offer a payment plan.  Basically, I want to use some of the positive cash flow of this rental property to pay for the roofing job - monthly payment plan. 

While screening roof companies, one company offered a creative way to really lower the overall costs.  The company suggested that I buy all of the supplies and I only pay the company for labor.  50% upfront and payment plan for the balance.  I can afford to pay for the roofing project both ways, but I would like to receive feedback to the best approach to pay for this roofing job. Thanks.