In addition, this can give you a better idea of what is going on in the unit. 

After simple addition, subtraction, long division, and multiplication I am no longer of any use.

If I had waited 6 months I would not have been able to pull out any additional cash so time became very valuable. 

In Seattle over the next two years you have Facebook doubling their Seattle area head count, Microsoft is opening their new bigger campus, Amazon has a couple more office buildings that will be completed and Google is taking over additional office space....along with a bunch of smaller growing companies continuing to expand and bring in high paid talent.I would do anything I could to not sell the Seattle property.

This Insurance would be in addition to the tenant business owners own required insurance policy.

Additionally, I will explore the effects these announcements will have on the local real estate market.

But with regards to OP’s specific question, in addition to what was mentioned above, I think the book would have you think more broadly about the team you would need to compile to make the situation successful (ie realtor, property manager, lender, and contractor [if necessary]).

General inspection we assumed in our costs but the additional inspections/ remediation's we did not.- *I estimated 4% for closing costs on our purchase price of $108,000 but closing costs were closer to 8%.

I would sell it, it's a lot of money with no work.If you rehab it and sell it for 600k you make an additional 60k, is it worth the effort and risk to you?

If so, it seems like it would be easy to be badly in the red before even getting a house under contract (in addition to, obviously, the marketing costs).