should I sell or rent

Recently, I finally bought a house.  will move from my condo.  I want to sell the condo.  But there is a condo above me, same exact condo ( size and layout) has been on sale for 6month, last week lower price 5K.  I will be willing to sell for 30K less, since my is one story lower.  should I sell? or should I rent it out for a year or so.  let the above guy sell his and then I will sell mine?  or price at 30K lower and let it compete?  I do not want to do long term rental for sure.  also afraid the renter damage the condo after a year or so.  I want to sell, but directly compete of the same condo, would it a very bad thing?  

Please help me out with the decision.  

Thank you so much