Is this a good estimate for expenses or overkill?

[Austin Bird]

I've put together this excel document after reading Brandon Turners "The Book on Rental Property Investing". I'm not sure if I'm budgeting too much for expenses or if that's just how the market is in my area because it is very difficult to find anything that cash flows positive. Here is the excel document:

(this is assuming a SFH 3bd/1ba 1200 sq ft)

Please let me know your thoughts. Thank you.