I like the area very much but true performance is what needs to be measured and it's fair for the state of economy. 

Before I started with my STR, I heard someone say you have to be more tolerable of a spreadsheet that isn’t perfect, and not every number/measurable is going to run perfectly from month to month.

House 1 CoC = 4.8% House 2 CoC = 3.84%My suggestion would be to look at your CoC return when comparing different properties so you have a good measuring stick to judge properties with different prices. 

Closing details are important to measure my key performance indicators.

These percentages tell you nothing of value, and most of the time will lie to you anyway.Build yourself a financial REI plan, based on a set of specific financial goals (not percentages), ...something that is measurable and means something.Now before someone writes that these percentages are just guidelines, and not actually rules, my answer to that is "why bother with them then". 

Your best risk prevention will be ensuring compliance with federal, state, and local legislation and ensuring you take all required safety measures for your residents. 

The next book I heard a lot of recommendations for was The Millionaire Real Estate Investor, this book is great for developing a specific plan, he talks about Return on Equity, I wasn't hearing a lot of people or books talk about this, but it really made sense to me and it's one of my favorite measurements today.  

.- Did they get the measurements right? 

It is a good measuring stick to use as a benchmark.

I am also going to start providing digital floorplans with measurements in my listings.