Does it take long time to turn AC unit around?
You probably can't do it yourself, but an HVAC technician likely could. Moving the unit likely requires:


Evacuating the refrigerant
Reconfigure (and potentially rerun) the line sets.
Reconfigure (and potentially rerun) electrical.
Physically moving the unit.
Charging the system back up with refrigerant.


You could probably do number 4, and maybe number 2 &amp; 3 if you have plumbing and electrical skills. It's doubtful that you have the tools and training required to do numbers 1 and 5. 

Also, see my updated answer to that question, that explains why you might not want to rotate the unit.