You'll have to pay a reciprocity tax before you go through immigration. That line took an hour for my wife last month. Once you pay the tax it is good for the life of your passport.

The you get in another line for immigration.

I'm not familiar with the crowds at that time of day. My SCL flights have all arrived mid morning.

Once you get through customs you'll be accosted with taxi drivers wanting exhorbanate fares.