Flying Crab of Doom build

i'm debating whether it would be worth dropping Omega Maneuver or Spiderlings on my flying crab of death from above to take Maneuvers instead.

This is the current build (actual set usage may vary):
Villain Plan by Mids' Villain Designer 1.601
http://www.cohplanner.com/

Click this DataLink to open the build!

Khybernetika: Level 50 Natural Arachnos Soldier
Primary Power Set: Crab Spider Soldier
Secondary Power Set: Crab Spider Training
Power Pool: Fitness
Power Pool: Flight
Power Pool: Leadership
Ancillary Pool: Leviathan Mastery

Villain Profile:
Level 1: Channelgun -- Decim-Acc/Dmg(A), Decim-Dmg/EndRdx(3), Decim-Dmg/Rchg(3), Decim-Acc/EndRdx/Rchg(5), Decim-Acc/Dmg/Rchg(5)
Level 1: Crab Spider Armor Upgrade -- S'fstPrt-ResDam/Def+(A), S'fstPrt-ResKB(46)
Level 2: Combat Training: Defensive -- LkGmblr-Def(A), LkGmblr-Rchg+(7), LkGmblr-Def/Rchg(7)
Level 4: Longfang -- Thundr-Acc/Dmg(A), Thundr-Dmg/EndRdx(9), Thundr-Dmg/Rchg(9), Thundr-Acc/Dmg/Rchg(11), Thundr-Acc/Dmg/EndRdx(11), Thundr-Dmg/EndRdx/Rchg(40)
Level 6: Swift -- Flight-I(A)
Level 8: Suppression -- Posi-Acc/Dmg/EndRdx(A), Posi-Dmg/EndRdx(13), Posi-Acc/Dmg(13), Posi-Dmg/Rchg(15), Posi-Dam%(15)
Level 10: Tactical Training: Maneuvers -- LkGmblr-Def(A), LkGmblr-Def/EndRdx(17), LkGmblr-Def/EndRdx/Rchg(17), LkGmblr-Rchg+(43)
Level 12: Venom Grenade -- Posi-Acc/Dmg/EndRdx(A), Posi-Dmg/EndRdx(19), Posi-Dmg/Rchg(19), Posi-Acc/Dmg(21), Posi-Dam%(21)
Level 14: Health -- Numna-Heal(A), Numna-Regen/Rcvry+(23), Mrcl-Rcvry+(27)
Level 16: Hover -- Frbd-Stlth(A), Zephyr-Travel(25), Zephyr-ResKB(25), Zephyr-Travel/EndRdx(33), Frbd-Fly(46)
Level 18: Frag Grenade -- Posi-Dmg/Rchg(A), Posi-Dmg/EndRdx(27), Posi-Dam%(29), Posi-Acc/Dmg(29), Posi-Acc/Dmg/EndRdx(31)
Level 20: Stamina -- P'Shift-EndMod/Acc(A), P'Shift-End%(23), P'Shift-EndMod(31), P'Shift-EndMod/Rchg(31)
Level 22: Tactical Training: Assault -- EndRdx-I(A)
Level 24: Tactical Training: Leadership -- GSFC-ToHit(A), GSFC-ToHit/EndRdx(33), GSFC-ToHit/Rchg/EndRdx(33), GSFC-Rchg/EndRdx(40), GSFC-Build%(42), GSFC-ToHit/Rchg(43)
Level 26: Mental Training -- Flight-I(A)
Level 28: Fortification -- ImpArm-ResDam/EndRdx(A), ImpArm-ResDam(34), Aegis-ResDam(34)
Level 30: Serum -- Dct'dW-Heal/Rchg(A), Dct'dW-Heal/EndRdx/Rchg(34), Dct'dW-EndRdx/Rchg(36), Dct'dW-Heal(36), Dct'dW-Rchg(36)
Level 32: Omega Maneuver -- Posi-Acc/Dmg(A), Posi-Dmg/EndRdx(37), Posi-Dmg/Rchg(37), Posi-Dam%(37), Posi-Acc/Dmg/EndRdx(39)
Level 35: Fly -- Flight-I(A)
Level 38: Call Reinforcements -- S'bndAl-Dmg(A), S'bndAl-Dmg/Rchg(39), S'bndAl-Acc/Dmg/Rchg(39), S'bndAl-Acc/Rchg(40)
Level 41: Spirit Shark -- Thundr-Acc/Dmg/EndRdx(A), Thundr-Acc/Dmg(42), Thundr-Dmg/EndRdx(42), Thundr-Dmg/Rchg(43), Thundr-Dmg/EndRdx/Rchg(50), Thundr-Acc/Dmg/Rchg(50)
Level 44: Bile Spray -- Posi-Acc/Dmg(A), Posi-Dmg/EndRdx(45), Posi-Dmg/Rchg(45), Posi-Acc/Dmg/EndRdx(45), Posi-Dam%(46)
Level 47: Summon Spiderlings -- C'Arms-Acc/Dmg/Rchg(A), C'Arms-EndRdx/Dmg/Rchg(48), C'Arms-Acc/Dmg(48), C'Arms-+Def(Pets)(48), C'Arms-Acc/Rchg(50)
Level 49: Assault -- EndRdx-I(A)
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Level 1: Brawl -- Empty(A)
Level 1: Sprint -- Empty(A)
Level 2: Rest -- Empty(A)
Level 1: Conditioning
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So, opinions?
Suggestions?