First let me start out with what I forgot to mention in my first comment. I love this piece its visually and conceptually stunning and it depicts what I love about diving, the exploration and the unknown, not the monster however I could do with out those on my dives. It also shows that you've been on more that a few dives, because their movement is spot on to what its like. So bravo to you on this one you've earned my watch. As for the gear needed, honestly not much more than what they are depicted having. Definitely a reel and line to act as guide back to your entry point, at least 2 lights per diver a primary and backup and while I wouldn't say its mandatory a pony bottle couldn't hurt. I personally would have my console on a lanyard as well to prevent snagging. And for your bucket list if you get the chance do it, you wont regret it. My recommendation is the South Pacific the waters almost always nice and the wrecks usually have a story behind them other than sunk for a reef, wrecks with some form of historic background seem to have more awe inspiring feel to them. Hope that helps