I believe Buildium does all of these functions as well. 

The property was my primary residence for a decade and now functions as rental unit so I am happy with the purchase overall and it has worked out well.

Returns is a function of risk, effort and barrier to entry.

You should have a robust insurance policy.

@Anthony DooleyReturn on investment is a function of how much you have to invest.

Don't worry about minor complaints, you are doing a fine job.Just one question, ALL sites have a delay in data from MLS updates, and from court reported information, and so on, is that a function of a monthly update routine or can the information be updated a little more frequently? 

Are there any realtors in HI that can speak to how robust the Honolulu market is?

Using the search function gave me this, hope it helps https://www.biggerpockets.com/forums/62/topics/1211224-nyc-c...

If the age of your equipment is older, or it stops functioning, those repairs can also add up.

While likely more expensive than Cleveland or Toledo, Columbus has a more diverse and robust economy, driven by government, education (Ohio State University), and healthcare.