Most books recommend only up to four additional supers. If you have nectar flows heavy enough to meed more than that it's recommended you pull some of the honey and then replace the empty frames back in. Keep in mind the taller your hive gets the more vulnerable it is to strong wind.
What you see in the pictures of the tallest hives are the tallest we go with them. When they fill the last one put on he harvests it and replaces the empty frames during the main season which is mid spring to early autumn here.
You also don't add extra supers until they fill the first two. You put the third one on when the second one is almost filled and then the next one on when the third one is almost filled (about 7 frames out of 10 are full)/
