But, about now, this guy has to be feeling that there are.It might be possible to exclude large tenants, if hallways and doors prevent easy passage due to being too narrow (in an old house, for example).  

I plan to find a "good" PM to manage the properties.Things that I am paying attention to are:Investor friendlyTaxesCrime and safetyRents are at least $1000After I narrow down to a specific area I plan to find an investor friendly agent to help me find my properties.  

Nobody can go see all the possible great rentals that hit the market each day, and the only sane thing to do is make some assumptions to narrow the search field:   (1) Rents are consistent by bedroom count for each neighborhood

This concern relates primarily to student rentals, as the time frame to find solid tenants is relatively narrow.

I would narrow that down first.

I'm trying to narrow down the "HOT" areas in Palm Beach County that are most desirable to Cash Buyers.............

You should narrow your investment vehicle scope:  are the investors going to be lien holders?  

Like anything, you have to narrow down the comps on the CMA, which can be done.  

Would be managing from ~20-30 mins away.Trying to narrow my focus and concentrate research on the following areas: University District, Bagley, Redford, Dearborn and possibly further up to Southfield.

I like it because I am able to search based on my desired zip code then narrow down the search by entering in specific criteria such as bedroom count, equity %, median price range, etc.