Help with advice, Sell or Rent Out

[Daniel Gipp]

6 months ago I started building a new home in a different part of town.   Rather than sell my existing home, I decided to turn it into a rental home.   The numbers weren't great, but I had a hard time allowing myself to sell it.   Now that the time is here, I'm having second thoughts and looking for help.   The house was built in 2010 in a cookie cutter subdivision.  Today my agent received a call from another agent who had a buyer who missed out on a home with the same floor plan and wanted to see if i would consider an offer on my house.   The location is just outside the San Antonio and Converse city limits in Texas.  

Expected Home Value - $178k (Purchased at $145k) 
Projected monthly rent - $1,375
expected cash flow assuming 8% capex, 8% maintenance, 10% vacancy - $80 a month (Principal pay down is $170 a month)

I only owe $116k so I expect to clear $43k after selling fees and commissions.    The question is, should i continue with the plan to rent out the property or should i look at taking the sale proceeds and buying a property that would cash flow better?   I imagine that since it was my former primary residence that i am exempt from the capital gains whereas after 5 years that would no longer be the case.  

What details did I leave out of the consideration?