The problem with long-term is that by the time you assemble all of that stuff there will probably be better alternatives for the same or less so it depends how 'long-term' we're talking about. A couple months? A year? In a year's time the Nvidia 800 series could be out. You'll have to keep an eye on what comes out in the interim. Anyway, to address components individually:
CPU: I'd say an i7 isn't really necessary but if you're able to get one at Microcenter pricing, you might as well. They also offer bundles with motherboards for even better deals. Again, it's all in-store pickup.
Cooler: You really don't need such a pricey one, especially if you're not really into overclocking. A $30ish one is fine.
Motherboard: Again, a bit overkill there, too, if you're not hardcore into overclocking. I'd recommend a Gigabyte UD3H or MSI G45 Gaming at the most. Asus offers similar priced boards (below their vanity/excessive priced ROG series) but I think they mostly coast on name recognition and aren't as reliable as they were a few years ago.
RAM: As Motoki and others have said, 8 is fine but 16 isn't going to break the bank and may prove useful for certain non-gaming applications.
Storage: Both fine.
Case: Overpriced for flashy looks. If you want that, fine. If not I got
this one for about $60ish a few weeks ago.
Video card: Overkill on two aspects. First, EVGA cards aren't really any better than other Nvidia manufacturers and their famed warranty is no longer any better than their competitors. Moreover, they tend to charge $20-50 more for the same product just because they are EVGA. Gigabyte, MSI, or Asus make just as good (and arguably better) cooling solutions (and that's the only real difference). Second, I'd get a base 780 at most. Even with multi-monitor gaming 780 is more than enough. You'd just be wasting $300+ for a set of numbers on a page with the practical/noticeable benefit lost on the human eye.
PSU: Again, overkill. Only reason you'd need a 1,000 watt PSU is if you're going to SLI a couple of 780 cards. 650 is more than fine. 750 is the absolute maximum I'd get.
Mouse: $10 Logitech mouse. I know people will oooo and ahhhh over these fancy brand name mouses (meeses?!!)... buttah-eeee sm0000v. But $125... for a mouse? Bro... bro? BRO! Just no. If you really must have one you can probably find decent fancy brand ones for $40ish.
All told I'd say there's a good $500-600 you'd be throwing into a void just for the sake of creating an objet d'art without any tangible gains.
it for now, and just purchase an external one down the road, or find a case that includes the optical bays.
