I guess the OP has now figured out that the Inon strobe manuals are horrible and near completely worthless. There is a Reef (I think) article out there that is much clearer about what the various dials do and what settings you want to use for various configurations. Here it is: http://reefphoto.com/kb.php?id=7 That one page is so much more helpful than the word salad Inon puts out.
diverdoug, what questions do you have? May be best just to put them out here.
New cameras (including some P&S) are starting to come with Wifi. I assume you want a live image and then a way to trip the shutter? I presume something like the Canon 6D can do that and that an Ikelite housing would not interfere too much with the Wifi. No need to drill anything or have waterproof connectors.
From what you've described I don't think I'd have confidence in either of these O-rings. Are you sure there is no reasonable way to get a legitimate Canon O-ring? Something like this http://www.divervisi...n o-ring&page=4 may be less than having it shipped from the US. (I can't tell where you are.) That would seem to be small piece of mind to me for putting a very expensive camera in a plastic box.