My thoughts:
1. a 3770K is a fine cpu, but most games do not make use of more than 2-3 cores. The extra hyperthreads will not b hardly used. Spend the extra $100 over a 3570K elsewhere.
2. Sabretooth is overpriced, and will not perform any better than a $150 Z77 motherboard.
3. Cases are a personal thing. The L10 is expensive, but buy it if you love it.
4. A GTX670 only needs a 500w psu. or, 700w for sli. 1275w is massive overkill, and because the psu will be loafing, it will operate inefficiently. Do not expect to ever recoup the price premium for platinum in electricity costs.
5. Liquid cooling is expensive, noisy, and less reliable than a good air cooler. And... in a well ventilated case, it will not cool better than a good air coler either. Look for a Noctua NH-D14 or Phanteks.
6. If you are gaming on a single 1080P monitor, a GTX670 is a good card. For gaming, the graphics card is all important.
If you will use a 2560 x 1600 monitor or triple monitors, then go stronger.
I would not plan on sli, either now, or in the future.
Here is my rant on that:
-----------------------------Start of rant----------------------------------------------------
Dual graphics cards vs. a good single card.
a) How good do you really need to be?
A single GTX650/ti or 7770 can give you good performance at 1920 x 1200 in most games.
A single GTX660 or 7850 will give you excellent performance at 1920 x 1200 in most games.
Even 2560 x 1600 will be good with lowered detail.
A single gtx690 or Titan is about as good as it gets.
Only if you are looking at triple monitor gaming, then sli/cf will be needed.
Even that is now changing with triple monitor support on top end cards.
b) The costs for a single card are lower.
You require a less expensive motherboard; no need for sli/cf or multiple pci-e slots.
Even a ITX motherboard will do.
Your psu costs are less.
A GTX660 needs a 430w psu, even a GTX680 only needs a 550w psu.
When you add another card to the mix, plan on adding 150-200w to your psu requirements.
Even the strongest GTX690 only needs 620w.
Case cooling becomes more of an issue with dual cards.
That means a more expensive case with more and stronger fans.
You will also look at more noise.
c) Dual cards do not always render their half of the display in sync, causing microstuttering. It is an annoying effect.
The benefit of higher benchmark fps can be offset, particularly with lower tier cards.
Read this:
http://www.tomshardware.com/reviews/radeon-geforce-stutter-crossfire,2995.html
d) dual card support is dependent on the driver. Not all games can benefit from dual cards.
e) cf/sli up front reduces your option to get another card for an upgrade. Not that I suggest you plan for that.
It will often be the case that replacing your current card with a newer gen card will offer a better upgrade path.
The GTX780 and amd 8000 series are not that far off.
-------------------------------End of rant-----------------------------------------------------------
With your budget, why not go whole hog and buy a GTX680, or even a GTX690 or Titan?
7. Ivy bridge does not benefit from fast ram. DDR3 1600 is fine.
Read this:
http://www.anandtech.com/show/4503/sandy-bridge-memory-scaling-choosing-the-best-ddr3
8. Love the SSD.
9. Take the time now to download and read, cover to cover, the case and motherboard manuals. You will learn much.
------------------good luck----------------