What kind of thermal protection do you recommend? What certification level is mandatory? I've got Open Water and Enriched Air. Do I need a backup light with my main? I really want to, "Been there, done that". Gotta put this in my dive log.
Temp: The water is cold, 60f. Thick wetsuits, 5mm minimum, 7mm or more, along with hood and gloves strongly suggested. Drysuit appropriate if you've got one.
Depth: No greater than 130'.
Nitrox: Not required
Certification: I will let the sponsoring dive shop address this (Chris?), but it is an advanced, cold water dive.
Lights: Two lights are required.