Did you look at the Part Express boxes?
http://www.parts-express.com/wizards/searchResults.cfm?searchFilter=CABINET&srchExt=&perPage=27&sortBy=1&layout=grid&page=1&srchPrice=&srchCat=535&srchMfg=&srchPromo=&srchAttr=
The WAF is there for the gloss black, cherry, or maple boxes. I have the Gloss black box and an SVS gloss black and the finish is great on both. (I would guess they are identical finishes, but haven't put them side by side).
All you do is cut the hole for the driver and drill/cut the hole for the speaker connection pass-through.
The guys here will tell you what to get. I'd say 8 hours is about right for the two I am doing. Much of that time is double & triple checking the measurments/layout, digging out the tools and, & getting everything setup outside so I don't get stinking MDF dust all over my basement!
However, since I have not used a DCX-2496 before, I suspect that learning curve will be a substantial time commitment on my part, but I'm looking forward to it.
If you got $$$ and don't enjoy this kind of thing at least a little, you probably shouldn't DIY!