Im almost ready to pull the trigger on the configuration linked bellow: http://uk.pcpartpicker.com/p/CctU
im going to use it mostly for gaming and a little bit of photoshop editing.
So what do you guys think?
I personally prefer Corsair ram (had issues with GSkill & Kingston in the past), but no need to change.
The Samsung 840 pro, Samsung 830 and the Intel 520 are all pretty similar in terms of performance and speed in the 120/128GB class. I have a 180GB Intel 520 in my desktop (smoking fast) and a 128GB Samsung 840 Pro in my laptop (very fast). I would price shop between those three models and swap for your 840.
If this is just for gaming and day to day use, might as well save yourself some bucks and get an i5-3570k. i7-3770k will increase your core clock and has a larger cache but it's overkill for current gen games. If you need the muscle for virtualization, encoding or video production/animation then get the extra muscle.