Im interested but Im O.W. advance & nitrox w/ ~ 50 dives, but not Deep or Wreck cert. Would I need these for this trip?
AOW, Nitrox and at least 50 dives should make you comfortable doing these dives! Most are 100-120 ft with some being as shallow as 80-90 ft. Many have variable depths meaning they are multilevel so you can hang out shallow vs going to the sand. They all have a hard bottom aka the sand and some are pretty scuttled meaning they do not have any relief so the dive is pretty much a square profile.
The local nitrox mix is 30% since on any given day you do not know whether you will be diving on a really deep wreck or one of the not so deep wrecks. You do not need a wreck cert as there is no penetration unless you are certified and really comfortable doing so. This will be decided based upon the diver's skills and knowledge of the diving area. For most of us...myself included...you have no need to penetrate the wrecks and will have an amazing time diving these relics of time!