Assassin Build

Is this a good assassin build? If not, can you tell me what to change?

10: Lucky 7 (1)
11: Lucky 7 (4)
12: Lucky 7 (7)
13: Lucky 7 (10)
14: Nimble (3)
15: Keen Eyes (3)
16: Keen Eyes (6)
17: Keen Eyes (, save Sp(+1)
18: save Sp(+4)
19: save Sp(+7)
20: Lucky 7 (20)
21: Nimble (6)
22: Nimble (9)
23: Nimble (12)
24: Nimble (15)
25: Nimble (18)
26: Nimble (20), Disorder (1)
27: Disorder (3), Dark Sight (1)
28: Dark Sight (4)
29: Dark Sight (7)
30: Dark Sight (10)
Second Job
30: Haste (1)
31: Haste (4)
32: Haste (7)
33: Haste (10)
34: Mastery (3)
35: Save +3
36: Save +3
37: Haste (19)
38: Haste (20) Critical (2)
39: Critical (5)
40: Critical (
41: Critical (11)
42: Critical (14)
43: Critical (17)
44: Critical (20)
45: Critical (23)
46: Critical (26)
47: Critical (29)
48: Critical (30) Mastery (5)
49: Mastery (
50: Booster (3)
51: Booster (6)
52: Booster (9)
53: Endure (3)
54: Drain (3)
55: Drain (6)
56: Drain (9)
57: Drain (12)
58: Drain (15)
59: Save +3
60: Save +3
61: Save +3
62: Save +3
63: Drain (30)
64: Mastery (11)
65: Mastery (14)
66: Mastery (17)
67: Mastery (20)
68: Booster (12)
69: Booster (15)
70: Booster (18) http://forums.mapletip.com/index.php?showtopic=113012