You HIRE a real estate professional who can get access to the home.
Identify the areas want photographed and they will tell you what their time is worth.
Some know their time is worth nothing.
As you know, the inside images may seem important, but you are aware there are no less then seven additional questions you are going to impose on the agent helping you. This identifies the TRAP the agent will fall into. To your seven questions, the response should be, "You are the investor, it's your job to know those answers."
As you know, the repair costs and acquisition costs depends on your resources and business model which you are not going to share,. But you are going to ask anyway....right?
Pay for the services you are going to use and you will find many who are willing to come to your assistance.