I wish the SKD LVBC came in white...
Regarding plates: http://www.tyrtactical.com/pro...r-level-3-i-c-plate/
They're a touch over 4lbs, but they also stop things the SPPs won't while still being thin.
ETA: I have 10x13s. They're 5.25lbs WITH backers. Forgot to get a weight WITHOUT backers. Oops.
0.70" at the thickest, 0.60" once you're far enough into the middle that the cover stops overlapping.