I use the green caviar without problems yet :P a bit slow on copying and moving items but still works for me got them used a year or more ago for around 100 QR each have 4 of them

but the rampage IV mobo won't run the HDD's some times don't know why :( some of them i guess dosent even detect them if i restart a couple of times then it does really bugging me i was thinking of buying 3 TB* 7 HDDs but now this isnt working :( searched alot on google no use :/ cannot RMA also as the shipping back charges are way more than the actual price of the mobo
nice thats a good deal on the rams i got 2*4 GB red vengeance from thailand for around 250 qr's (1800 Baht) i also got my PSU from Thailand so don't know about tornado
If you are ok with thermal take you can get it from winstar a shop inside the sofitel in a corner don't know about the price though
you can find the monitors with them too i asked about a samsung 32" LED and it was 2900 :/ i guess the 27 will be 2000 something you can go to the samsung showroom or lulu you will find the monitor i think

about mouse i would reccoment death adder i bought one around 1 year ago from virgin it worked awsome but then bought a mamba which is also good but a bit expensive
and keyboard i have a razer lycosa which is by far the best keyboard i had no problems yet and is reasonably priced you can look into them :)

just installed my Water cooling system really happy <3 :P the temps arent as low as i was hoping but still :P installed a xspc rx360 kit with uv orange tubing at idle i get 39-40 highest and at maximum stress i get 48-52 they are good but even the H70 i had before was doing the same