30% crit is hard cap, which mean stack more than 25% crit rating not good idea. I mean, pre 2.0 you could had about 40%+ crit chance, but crits were like gift on holiday - 1,2,3, and then 10 non crits.
5% alacrity is good idea, i noticed in this thread.
1-st of all run with stats what you have, gear up for better equipment and when you will had more then half of endgame gear you can start min/max.
P.S. sry for my English.