SinX build - feasible?

[Neuneck]

Heyo everyone,

I like planning ahead (especially with the new resetter prices)...
Made up a build for my Sin when I make it to rebirth:
It's a crit build with SD capabilities and "lots" of sp for GT spamming...

Stats:
Str: 59+11 (9Job, 2 Kobold Cards)
Agi: 90+20 (15 Job, 2 Brooches, 2 Ghost Bandana, 1 Thief Clothes)
Vit: 47+3
Int: 20
Dex: 30+10
Luk: 52+8 (C r i t)

Substats: HP: 11k without cards, SP: 600, Hit: 138, Flee: 168, ASPD: 178, Crit 108

Skillz: (only the important ones)
Katar masteries: max
Soul Destroyer: 10
Meteor Assault: 10
Grimtooth: 5
Enchant Deadly Poison: 5

Equips:
+8 Tripple Crit Jur (as soon as i got that money)
+5 ele katars (for SD)
Ghost Bandana (agi)
+X Thief Clothes (Pupa or Peco card, dunno yet)
+4/5 Muffler (Whisp Card)
2x Brooch of Counter (2 agi, 2 str, 8 crit)
+4 Shoes (dunno what i can afford for cards)

What do you think of it?
Rode Calc gives me like 1.6k of crit dmg, due to EDP, can anyone say if that's realistic? Also, how are the chances of Creating Poison?

Thanks in advance

Neuneck