Glad you took some time and made some final-ish decisions. Puts the whole thing into perspective doesn't it?
Get a sound card if you want to use analog (e.g. headphone) inputs. If you will just, or primarily, be using TV sound, then you don't need the sound card.
4TB is massive. If money becomes an issue again, you can chop that down to a 2 or 3TB and still do fine for TV recording as long as you don't need to record everything in HD.
Haswell is great an all, but not amazing for overclocking. Here's hoping that Intel follows up on that promise to give us solid overclocking chips soon, maybe even before you do your build? One can hope.
As for the cooler - I don't think a 212 Evo fits in a GD07 based on this review of the GD07
. I'd go with a 120MM Corsair water cooling unit if you want to overclock, something like this H80i
. Also, note that the stock cooler will do fine until you want to overclock.
For internet connectivity, I've always done well with Trendnet offerings, like this 4 port bridge
. It basically takes an existing wireless signal and lets you connect more devices via ethernet. I got mine for US$25 and it gets me speeds as good as this Asus wireless USB adapter
(got the Asus initially, then returned it for the Trendnet when that went on sale. Before that, used a single port Trendnet bridge for 5 years). I like it because I can place the adapter anywhere, even several feet from my PC and get solid speeds.
Skip the fans initially, you can always add them later if you need the extra cooling. I was going to toss extra fans in my GD05 and never did. Only ever hooked up one of the included fans actually and my HTPC runs quiet and cool. Case should come with a few fans, so give them a try first.
Also, I know the Blu-ray burner is tempting, but I'd say just skip it. I got one for my HTPC and never use it for anything other than watching DVDs and burning regular DVDs. You can save $50 and just get a Lite-On DVD burner.
All in all, its a solid build that should serve you well for a long time. Shoot, only thing you'd need to replace in the next 5 years is the GPU assuming you wanted to keep up with the most cutting edge games at higher settings. Definitely keep us updated and post pics! You can use Pcpartpicker.com to post your pics and tell your story.
Gaming: i5-3570k/Z77/212 Evo/Corsair 500R/16GB 1600 CL8/GB GTX 760-2GB/840 250gb, EVO 500gb, SG 3tb/Tachyon 650w/Win10
HTPC: i3 3225/H77/8gb g.skill 1.25v/1+2TB HDD/Asus BR/Silverstone GD05B/Antec 380w/Win10
Monitor: Acer Predator X34 Ultrawide 1440p