As a pve support, Crit chance is good for any pve class since we have so many overkill stats for base, running 600-750 is a good start. Perhaps dominance if the damage boost is applicable. Rest you should even out into base stats, making it so that valiance influences your determination.
Bard however is broken for us on RU, important rubies no longer work and it's damage is below the sewers
Play it for the love, not for the numbers