I would take your highest cert and nitrox if you have one. The others are frankly meaningless to ops unless you want a Trimix fill. AOW satisfies liability for deep and maybe night but I have never been asked for a night cert and if I was I'd find another operator that wasn't so anal. I always show my instructor card and carry my nitrox. I'd take my helitrox but have heard of shops that won't know what it is. Drysuit if you plan on renting a suit may be required in some places but I can talk to any diver for 5-10 minutes and decide if they know what drysuit diving entails and whether thay can handle it. Only reason many require it, again, is liability.