Honestly, Intel is where its at currently. I wish AMD was more competetive at the higher end, but sadly they just aren't.
Nothing wrong with a SB build. They are still quite powerful and a good choice. The 2700K is a heck of a CPU too, especially if you do things that can take advantage of its HT.
In regards to the RAM, you may also consider 1866 speed. You will not be able to tell the difference in world use anyway. Although certain apps may perform ever so slightly better with the faster RAM though.
CAS latency will not make a difference on SB. With Intel, its all about raw clock speed.
1600-1866 is the sweet spot for SB. 2133 is a good choice, but it starts getting much more difficult to notice the gains in performance at these speeds. Diminishing returns I suppose is the term Im looking for, once you get over 1600 under SB.
Look at these prices at the Egg. Newegg.com - Intel Core i7-2700K Sandy Bridge 3.5GHz (3.9GHz Turbo) LGA 1155 95W Quad-Core Desktop Processor Intel HD Graphics 3000 BX80623i72700K Newegg.com - G.SKILL Ripjaws X Series 8GB (2 x 4GB) 240-Pin DDR3 SDRAM DDR3 1866 (PC3 14900) Desktop Memory Model F3-14900CL9D-8GBXL
I really like Mushkin Redline RAM myself. IMHO, its superior to Dominators. But just a opinion.
I paired my 2700K with Redline Ridgebacks, http://www.newegg.com/Product/Produc...82E16820226224
and it performs very well. No issues or complaints.