Agi = Stam > AP when it comes to stat priority.
Also, will you be focusing more on pve or pvp once you hit 60? Your build possibilities can vary greatly, depending. For your current build though, put that next point into Adrenaline Rush. You should have gotten it earlier imo. I agree with John about SnD. Evis only starts becoming good damage-wise when you get your AP close to 1k, and your white damage will contribute to 50% of your raid damage with SnD up most of the time.
If you're going to be doing both pvp and pve, this
is a build you'd do well with. It was the build I used for most of my raiding career (I was usually top dps in the raid, up until some of our rogues specced combat daggers ie. pve fgt) that was always viable for battlegrounds (though I was always a fan of mace spec).
Anything else, just ask. Been playing my rogue since release (got about 115 days at level 60) so fire away.