I have the circumcision scar about half way down (where you can see the skin tone change). Every partner stops at that exact spot so i’m assuming that the back of the throat is about 4 inches. From your measurement pics, you would still have a bit more than 2 inches to spare when they go all the way down. Your also on the larger side of the scale, so probably haven’t been deepthroat ed either right, unless you’ve been f’n lucky.. haha..