You didn't really get screwed since this one is still more money and isn't factory OCed. If you are going with multiple monitors the extra 1.5GB would help.
Could you step-up the card?
I could, the parts are just being delivered and I'm getting home from camp on the 19th (complicated). I only get 10 days off, so I'm not sure on time frames to be able to build it. So, if I am planning to go on a multi monitor setup in the future I should return the 1.5GB and buy the 3GB?
This is getting to the point where you try to build something and before you even get your parts the next best thing is already out... uhhg.