Dual Blade SP Guide

I revised what Cyanne wrote and changed the following:

 Spoiler

Level 70: 1 Mirror Image, 10 Bloody Storm, 15 Flying Assaulter (CS book)
Level 71: 16 Flying Assaulter, 3 Mirror Image
Level 72: 6 Mirror Image
Level 73: 9 Mirror Image
Level 74: 11 Mirror Image (CS book), 18 Flying Assaulter
Level 75: 19 Flying Assaulter, 3 Tornado Spin
Level 76: 7 Tornado Spin (CS book)
Level 77: 10 Tornado Spin
Level 78: 13 Tornado Spin
Level 79: 16 Tornado Spin
Level 80: 19 Tornado Spin
Level 81: 20 Flying Assaulter, 20 Tornado Spin, 1 Upper Stab
Level 82: 4 Upper Stab
Level 83: 7 Upper Stab
Level 84: 10 Upper Stab
Level 85: 13 Upper Stab
Level 86: 16 Upper Stab
Level 87: 19 Upper Stab
Level 88: 20 Upper Stab, 13 Mirror Image
Level 89: 16 Mirror Image
Level 90: 19 Mirror Image
Level 91: 22 Mirror Image
Level 92: 25 Mirror Image
Level 93: 28 Mirror Image
Level 94: 30 Mirror Image, 1 Owl Spirit
Level 95: 4 Owl Spirit
Level 96: 7 Owl Spirit
Level 97: 10 Owl Spirit
Level 98: 13 Owl Spirit
Level 99: 16 Owl Spirit
Level 100: 19 Owl Spirit
Level 101: 20 Owl Spirit, 2 Flash Bang
Level 102: 5 Flash Bang
Level 103: 8 Flash Bang
Level 104: 11 Flash Bang
Level 105: 14 Flash Bang
Level 106: 17 Flash Bang
Level 107: 20 Flash Bang

The only mistakes are at lvl 70 (1 SP too many, as pointed out), and lvl 107 (+2 in Flashbang, but where does the 3rd SP go?). Other than that, there shouldn't be any problems with maxing anything.

If I could I would go 19 fj and make the build play smoother >"<
(able to reach 16 FA at 70, and 11 MI at 73)

EDIT: maybe cap fj at 17 till late 70, lv 17-19 fj only differ in mp cost

re-EDIT: I now heard that if you have 0 SP left you gain no bonus SP from the skill book from CS