Collecting money from a deadbeat who skips town has a very low success rate. 

As other have identified, you won't be able to collect for any damages as I rented to a Canadian citizen who was a great tenant for three years till he did not pay for three months and quietly vacated the property.

., as noted, if you want everything to be above board: collect a W-9 from everyone you hire.  

After completing the renovations we plan to refinance and then hold long term to collect cash flow!

You can ask for generic suggestions - "What kinds of companies are out there that do rent collection?"

I'm a real estate agent with the largest brokerage inside the city & locally-owned, Plat Collective.

Odds are good the listing agent will just collect the buyers and sellers commission in that situation, so all you have done is given up representation and not saved money.As far as the comment about recording cameras, it is very common for sellers to place hidden cameras in their properties.

Prop the most hardest question , what is a respectable and ideal fee to collect?

It may be the volume of business and there is no need to do them sooner if you filed and extension. 

My wife I are going to renovate and update the entire house, build a large wrap around deck with a pool and hot tub, and do extensive landscaping filled with native plants and fruit trees.