Ordered the 17" one tail end of last week, email came through today saying it's estimated build date is the 15th.
Don't worry, I found one for the Optimus VI - looks good! The guy is reasonably entertaining too. http://www.kitguru.net/laptops/leo-waldock/pcspecialist-optimus-nebula-review/
In my setup I have the following wireless AC card in my order:
GIGABIT LAN & WIRELESS INTEL® AC-3160 M.2 (433Mbps, 802.11AC) + BLUETOOTH
This is not currently available to select though if doing a new order. Wonder if it's out of stock or no longer being sold? I believe that AC is the better option over B/G/N.
The AC wireless card is only useful if you have an AC wifi router
I upgraded to the Killer network card as you suggested. Is that ok for my router? http://www.netgear.com/home/products/networking/dsl-modems-routers/dgnd3700.aspx