The reason no one has given you a positive ID is that no one can tell for sure. It's often difficult even for marine biologists working with octos, although it's easier if you see the octopus rather than just photos.
It was easy when we could buy from Octopets - we knew what we were getting. An octo can look something like a briareus, for instance, but not be a briareus.
My guess is you don't have a briareus, if the eggs are that small. (The egg size is one of the identifying features of an octopus. )
Sorry that ahab has proceeded to egg laying so soon. You seem well set up to raise hatchlings from larger eggs. Hope you get an opportunity to do this next time.
Nancy