I personally would not get too hung up on the exact stats. With sage, I tend to run different stats than people generally recommend, and it seems to work well enough for me. For a starting point, balancing the crit and alacrity is not a bad rule of thumb (which you have done), but from there, I would make tweaks as you get more familiar with the class and see what works best.
Likewise, in case you are looking online at rotations, I would also look to those more as guidance than rules. According to all the guides I have seen, my rotations are completely wrong, but, once again, it seems