One of the biggest complaints was the lack of places to stay and the expense for such.  

@John Kirtley Most of the Charleston beaches have become too expensive to cash flow.

The D/F locations look great on paper but almost never pencil out that way with all the vacancies and expenses. 

I know a cost segregation study would be too expensive for such a small amount of property, but is it permissible for me to estimate the value of the components on my own?

When you click for a showing, it gets sent to paid agents or Zillow Flex partners.

I have NOT placed much research into it but from what I have read their fee structure is expensive. 

They only get paid 1% of the credit lines they get for you successfully.

Rehab expense?

I was out of cash and he needed to get paid.

IF you plan on going back someday, and this is the home you want to move back to, then renting it would be a good idea as long as you estimate that it will cover itself, or preferably, cash flow, which it appears that yours will at @ $2K or so per month (after expenses).