An experienced agent can provide more detailed and accurate comps then Zillow or Realtor.com.

Then go with the 30 yr loan.I would point out that the comment earlier about how "you only get 4 loans on 30 year amortizations and you get unlimited on 15 year loans if you can keep qualifying" is not really accurate. 

I do not know though how accurate they are.

As it relates to an accountant, I would recommend one that does your taxes yearly to make sure you file with your investment property accurately.

This information should be accurate (not 100% guaranteed though).

If the information on their initial application wasn't accurate, that just makes it that much harder.For those who you already have a judgment against, you don't need to serve them again in order to file an Abstract of Judgment or to send them to collections or to report the debt on their credit report. 

Not always updated and accurate but usually a good resource.Your county's tax assessor - you'll be able to find the tax address of the owners, which may indicate their primary residence.

Was the list that they gave you pretty accurate and up to date?

For my owner occupied home, I have 33% equity plus value of the home per zillow's zestimate (which i know is not entirely accurate) is 21%.  

You would be hard pressed to find properties in the 60 sq ft range which  are in your own backyard There is nothing like mining your own neighborhood and investing for both cash flow and appreciation Study you local market and I be you will find both types of properties that would be much less of a gamble then venturing into the unknown