What will happen if I mix these together? (timing q)

You may void the Patriot memory warranty by running them at 2.2V (which is quite high for DDR2). Check with Patriot.
Remember, too, that unless you are running a Core2Duo/quad chip from the future with a 1600MHz data rate FSB, all you really need to fully saturate a 1333MHz FSB is DDR2-667 RAM running in dual channel mode.