One of the biggest red flags I have as a lender (who lends my own money as well as secondary market loan) is when a rookie tells me there goal is to buy 10, 20, whatever properties in the next year. my next question is how many do you own currently?

/city regulations, set up costs, doing things to stand out) and leave you with less cash in case of an emergency.

Maybe every city is like that, but for me more than almost any other city I have been too I think you really have to know the area and have to know the tenant base. 

If any of your properties are discovered by City officials to be unregistered, you can receive an administrative citation for failure to register; this penalty can cost $100 or more per property.

Are there any specific cities you are considering?

What are the biggest pitfalls I should look out for? 

And I don’t mean something like saying you want to invest in New York City, I mean an expert on specific neighborhoods you have chosen for a specific reason.

It's the biggest unit of the 4 with the highest rent.What can I expect with this tenent?   

I’m looking for information from experienced investors about areas within other cities & states that are promising for such investments.

If salt lake city is a low cap rate market then its impossible.