Inon base mount for WP-dc35; modify slightly (add shim, elongate screw holes) as I posted previously. This is a bayonet mount for Inon wet lenses, which makes it quick and easy to add/remove/change lenses underwater.
Inon UFL-165AD fisheye lens, or UWL-100 28AD with or without dome, or maybe UWL-105AD.
Inon UCL-165AD close up lens, or get 2 and stack them.
http://www.inon.jp/_userdata/DL_PDF/inonlens2009_en.pdf
The Inon web site will say that you need an adapter
http://www.reefphoto.com/index.php?main_page=product_info&products_id=839 to put the UCL-165AD closeup lens onto the mount base -- you could do that instead of making the shim, but the wide angle lens would still need the shim, since this adapter ring would put it too far from the camera lens to work at all well.
Optically triggered strobe(s) of your choice. If buying new, I would get the Inon S2000 or D2000, or the Sea&Sea YS-01. I have manual YS-27DX strobes, and a YS-90AutoDx; they all do the job.
Focus light. Fantasea Nano at a minimum ($40). I have the Hartenberger Nano and am very pleased so far ($550).
Handles, tray, strobe arms -- Ultralight (real ones, not the eBay knockoffs) from reefphoto.com, backscatter.com or H20, or the similar ones sold by opticaloceansales.com, or DIY make some of it and buy the rest.