Originally Posted by Alsacienne

Having re-read the original post (my bad!) and seeing that the OP wants to travel in November, I'd strongly advise against hiring a car and self-driving. Several local tour operators offer 3 day/2 night tours and this would probably be the best option including accommodation and meals. Again, TA's Iceland Forum can help steer you towards these companies. I'd suggest a whole day would be necessary to enjoy the Golden Circle. As regards the 'South Coast' it depends how far you are planning to travel. If it's to Jokulsarlon, you'll be looking at a minimum of 14 hours round trip from Reykjavik because there are lots of lovely waterfalls and Skaftafell National Park to explore en route. That's where I suggest a specialist tour company would maximise your visit. Also a nice day could be exploring the Reykjanes peninsular (around the airport) with plenty of volcanic activity and the Bridge between the continents ... possibly even a half day tour if time is tight.