Hold on, Rohan. I'll edit this post after I have a look at all this stuff. I'm pretty certified on liquid cooling systems
Ok, The CPU block looks good. I, personally would go with the Koolance CPU-340
with the 1366 retention.
Two radiators...not so much. I would suggest the Danger Den BI Dual 120mm.
The Danger Den BI X-flow dual 120mm
would also work just as well if you wanted the barbs to be on opposite ends.
About hoses. I would use 3/8's ID || 1/2 OD for that small of a system. 1/2 ID is just too large and you won't get proper flow on such a small loop. Any brand will do.
As above, 3/8 ID || 1/2 OD compression fittings are my preference. Here's an example brand: BitsPower Ultimate G1/4 Thread 3/8 ID || 1/2 OD
And I can't seem to find any data on the pump...
Don't forget your reservoir! :P