Need some advice for D700 short on time

I need to get a housing in two weeks. I have an Aquatica D100 set up and ports, and twin nikonos 103 strobes. I can't see useing the D100 anymore as I own a D300, D700 and D3 (I am a wedding photographer) I think the D700 is what I want to take UW. 95% of my UW shooting is Wide Angle and will be with a 16mm. I hardly ever get UW like in the old days but I have the following questions.

1. I am considering Ikelite because I dive so infrequent but I hear the super dome might vignette with the 16mm anyone know for sure?

2. I have Aquatica ports already and the D700 is a great camera for the long term should I just bite it an get the Aquatica as I can use it for a long time, except for video but what about lighting UW? - see number 3 below

3. I see the D700 as a long term camera investment with the exception of having video like The 5D markII. however UW we would need video lights and strobe would we not? maybe a housing is not really a long term investment then or do the lighting issues kill having still and video UW?

4. I always shoot manual but will TTL on both systems with 103 strobes cost more etc?

5. Could I even sell an Aquatica d100 without the dome?

Thanks so much I have searched but am short on time. As far as money goes it is not a HUGE issue, not getting UW a lot is the main justification issue to lower costs.

Bite on the Aquatica!

The 103 you refer to are SB 103 Nikonos strobes I presume, in which case you cannot get TTL from those strobe on a current digital camera, the circuitry is too old to be compatible with available TTL converter (so far as I know there is no off the shelf underwater strobe that is readily TTL compatible with digital type DSLR). The Aquatica D700 has a built in switchboard that will allow you to switch from 2 pins (ground and sync only) to full 5 pins active (to take advantage of a TTL converter and compatible underwater strobe)