Yeah, I agree with JohnC:
Your GTX760 will be the limiting factor either way as it's likely to struggle at 1440p a little (It'll be *okay*) and it won't get anywhere near a constant 144fps at 1080p unless you really dial back the details.
I'd be loathe to spend money on a 3D gaming/lightboost monitor right now with G-Sync still in its infancy and Freesync models due out by the fall. Waiting is advised.
On the other hand, if you want a Korean IPS screen and have money burning a hole in your pocket, there's no point in waiting because Freesync/GSync and other fancy features are unlikely to be available on the budget Korean stuff first, they'll trickle in from Asus, Acer, LG, Samsung first - and probably with a price-premium for supporting the latest DisplayPort standard.
<insert large, flashing, epileptic-fit-inducing signature (based on the latest internet-meme) here>