I can't tell if you're going for BiS pve or pvp, but you're pretty far off both of them.
You're not using brutal 4set which in my personal opinion is best by far, but you wouldn't be the first rogue I've seen to use a different build, so whatever.
I'm going to assume you're going for a pvp set, since you're using a couple of very low ilvl pieces.
Your rings are bad. You should use two of these three:
Angelista's Revenge - Item - World of Warcraft Band of the Eternal Champion - Item - World of Warcraft Aquamarine Signet - Item - World of Warcraft (of agility). Preferably the two latter.
Your trinkets are fine but I believe
Flashing Steel Talisman - Item - World of Warcraft and
Searing Words - Item - World of Warcraft are both significantly better.
Elemental force is a worthless enchant. Get x2 dancing steel.
There's a metagem with one more agility than yours.
I know it isn't related to your gear, but leeching poison and gouge glyph are both horrible.
You should also consider regemming almost completely. I don't know what you were thinking when you put crit gems in your gear. If you really want more crit, at least use agi/crit gems. And don't ignore big socket bonuses like the +4 agility on your chest.
I don't mean to sound harsh by the way. Just don't throw around the term "BiS" like that.
This rogue
Complex @ Argent Dawn - Community - World of Warcraft is the best geared rogue in the bracket right now, and still not BiS.