Wow, that's a beautiful bike - I love the 2014 paint job. And it sounds like you got a great deal. Enjoy.
RE: Hand pain - This may be obvious, but make sure you make a habit of moving your hands around to different positions as you ride. Use the drops for fast flats and down-hills, use the hoods for climbs or flats, and maybe the corners (just rear of the hoods) just to mix it up on straights.
Also, don't be afraid to adjust the angle of your handlebar. Try rotating it up or down, just a few degrees, and see what you think. Micro-adjustments can make a huge difference! If you carry a little folding tool, you can fine-tune mid-ride and dial it in.