Hello,  I'm excited to get signed up on BiggerPockets, my brother introduced me to the podcast about a year ago and I have been gathering a lot of great info from the show.  

.: is not accurate.

I just want to make sure I am including every expenses to get an accurate cash flow number.

Yes, the Podcast heard is likely accurate.  

You need an accurate and complete scope of work.

I stumbled across this wikihow on How to Squat in Abandoned PropertyI have no idea how accurate this information is, but it might be useful to know the mindset of potential squatters.

Where do you find the best, most up to date and accurate listings for potential investments?

They will also be able to gather any information you would need to make a good financial decision.

You wouldn't  happen to have the contact information for that gathering  would you?

Google searches are not that helpful in providing accurate reviews and most of those look negative .. so hopefully if someone's currently using a mgmt company it will be better to get first hand info :)