How about another useful cert for your area of activity: Dry Suit Diver!I am not the kind of guy that collects certifications. There are just two that I really want to get, though, because they really expand my options, both locally and abroad:
Deep diving (up to 40 m)
Current and drift diving (for the North Sea, but also for the Oosterschelde)
Other than that: gaining experience, dives, and routines are my focus for the coming years.
PS: I already have some useful certifications, such as Nitrox
Welcome to the forum! I did some diving in the Oosterschelde also before moving to the North East Coast of the US. NE diving is not that different than the North Sea! Cold and dark.