Looking to buy new PC, what do you think about this setup?

The build looks good but you could save some money in a few places.

-SSD- get the Samsung 840 evo, it is usually quite a bit cheaper and you wouldn't even notice the difference.
-Ram- you could probably find a cheaper ram set, also try to find one that is CL 9 at 1600 mHz
-GPU- If you are playing on a 1080p monitor I would just get a single gtx 780, the TI only gains something like 12% performance for an additional 30% price. You could save the money for a GPU upgrade in the future or SLI the 780.

What exactly are you doing with this computer?

If it's just for gaming, then you're far better off with a lot of changes.

1) An i5-4670k will perform pretty much exactly the same as an i7-4770k. In the US, it's $100 cheaper - I don't know if it's a large difference in Hungary, but there's no reason to spend the money for an i7 unless you're doing video editing or rendering in which time matters.

2) You don't need such an expensive motherboard - something like an AsRock z87 Extreme 4 will be MORE than capable of handling any overclock that all-in-one watercooler can give you.

3) 16GB of ram is a waste of money - 8GB is enough to SIMULTANEOUSLY run battlefield 3, photoshop, AND 30 tabs in chrome... all at once, all very ram-heavy applications.

4) Get a single 780ti and don't worry about SLI and its scaling and drivers. As for the VRAM, seriously, not going to be an issue unless something very strange happens. That being said, it all depends on your monitor. If you get a 120Hz monitor, go with the 780ti, if you have a 1080p, 60hz monitor, a single 780 will max games for a long time.

5) Ditch the 256GB expensive SSD for a 120GB Samsung EVO. Yes, even if you can afford the larger SSD, there's going to be no use for it. Remember that most games gain absolutely no benefit other than a slightly faster initial load from being on an SSD. The only ones you want to consider putting on an SSD are MMORPGs to get rid of the loading screens, and games like half-life or skyrim for the same reason. Then consider that the 120GB drive still gives you about 60GB after installing windows 7, or 80GB after installing windows 8, and you're covered. (Also remember that dual-booting windows 7 and 8 from the same drive is going to give you huge corruption issues if you can even get it to install, so if that's what you're thinking, you need two drives.)

6) With a 780 ti, you only need a 650w unit, and that's a very pricey unit. I highly suggest the Seasonic X-650, which is a very good PSU at a very reasonable price.

7) You have all these incredibly expensive parts, and then a relatively cheap case. Either get a Fractal Design R4, which is soundproofed, or consider building with the micro-ATX form factor to have a smaller computer. (remember you would then need a m-ATX motherboard, as well.)

8) Don't get a razor keyboard, they aren't built particularly well. Get an actual branded mechanical keyboard. It will last you forever and a day, and it feels like typing on a cloud of boobs.

That's a very bad way to approach things, sorry...

Future proofing doesn't exist, period. Think about how fast technology evolves, and think about where it might be in 5 years. Think about what graphics cards we had five years ago. (The flagship was the GTX 295.)

You are far, far better off both money-wise and performance wise buying a graphics card that meets your expectations now, and then selling & upgrading it in the future, rather than spending big on, say, two 770s when you aren't going to need anything close to their performance and will then be stuck with a pair of five year old cards.