I will try some of that and see if I can get some more accurate numbers I also just made a new post with a potential property if you want to take a look.

I called the seller myself to get accurate information.

Glad you found someone Jon, I really hate seeing Business Owners struggle or go under because of low quality Bookkeepers that don't make accurate financials for the Owners to make better decisions. 

Two questions: Is there something else  I can do before I blast their name everywhere with an accurate review of what happened and how terrible they are and/or file in small claims?

And calculators are only as accurate as your inputs...Did you inspect these places?

I have played with AirDNA and heard of Pricelabs, but how accurate are these sites with their estimates?

is it accurate?)

it is not accurate for the Peoria property.  

@Thomas SehonRecommend exploring as many sources as possible to get referrals AND cross-reference them to get as much accurate information as possible.Check out NARPM.com, BP’s Property Manager Finder (BiggerPockets: The Real Estate Investing Social Network), etc.Also, encourage you to learn from the mistakes of others - by reading posts here on BiggerPockets about owners not having their expectations met by their current Property Management Company.

For newly constructed, purchased or renovated properties and also retroactive generally over the last 10 years, building components are properly classified into individual units of property and accurate recovery periods for computing depreciation deductions.