Hello Mini

I looked at your Stl model I loaded it into Cura 15.04.6 an came up with a little over 4 hours 10 minutes to print the Model.
An then just for giggles loaded it into Cura 4.0.3 an came up with a print time of 3 hours 43 minutes to print the Model.
In total Cura 4.0.3 would have saved me about 1/2 hour of printing.

You may want to check the settings on your slicer.