What are you going to be using it for? This would be my best attempt, though it comes over £1600 but only slightly. You could definitely save money if you use the HX750, and a cheaper case. Or if you still wanted to 'watercoool', the H50 is cheaper than the Noctua.
I presumed you were going to install your OS on the SSD, which is why I included one. The Crucial has got some rave reviews, and is pretty damn cheap. I wouldn't use the Cav Greens for anything other than storage or a backup, which is why I replaced the 2TB drive for a 1TB Cav Black for installing games/programs on, and a 1TB Cav Green for general storage/backup. I also managed to squeeze a GTX 480 in.
I wouldn't bother with a 120Hz monitor unless you want to do some 3D gaming, and if you do want to 3D game, I'd say you needed a card with more oomph than the 460, which leaves you with a catch 22 situation.
Anyway, late night rambles..