Like NetDoc - the weekend after I finished my OW,I moved onto AOW. At the end of the dives, was I really an advanced diver? According to the standards, yes, according to my skill level, no. It was not until a lot more dives did I feel that I should call myself an advanced diver.
I liked taking it to get the flavour of what else was out there, plus around here (Ottawa Canada), most of the wrecks in the St Lawrence are considered "advanced". This is due to the fact that many of the wrecks are deep (beyond 60ft). With many of the wrecks also requiring a charter to get to them, boat captains frequently (more and more) ask for proof of c-level. Without the appropriate one, you don't get on.
Do it when you feel ready. Have fun