IO'ing a TA/A

Well my TA/A recently hit 50 and as is my habit I'm planning to respec and IO him in an attempt to at least somewhat optimize him. I'm not looking to spend a huge amount so no purples (except for the Chance for Knockback Proc which is reasonably cheap) although I do have the Inf to afford a few shinnies like the LotGs.

I'm comfortable with the Thunderstrikes and Positrons in the blast powers. It works for my Blaster and I see no reason to change it on a defender but I am interested in people's opinions on the slotting of the Trick Arrow powers. I'm currently running about 35% ranged defense so with Flash Arrow I'm almost at the soft cap. As a note the four slot Dark Watcher's in Flash Arrow is mostly a case of having the slots available, it's a nice set but I wouldn't object to moving the slots if they'd be more useful elsewhere.

Also, regarding the last four powers. They kinda feel tacked on to me, they're nice to have but I'm not sure if there's something that would be better (especially Aim). Also while two recharge IOs seems optimal for most of the powers there I'm wondering if it's worth slotting them differently. I did consider using Dark Mastery instead of Power Mastery since Soul Drain recharges faster and is significantly more powerful than Power Build Up. I ended up sticking with PBU because I can forsee situations when I'll want to use my build up power without drawing aggro.

Thanks
Adeon

Hero Plan by Mids' Hero Designer 1.401
http://www.cohplanner.com/

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Marcus Taldari: Level 50 Magic Defender
Primary Power Set: Trick Arrow
Secondary Power Set: Archery
Power Pool: Leaping
Power Pool: Fitness
Power Pool: Leadership
Ancillary Pool: Power Mastery

Hero Profile:
Level 1: Flash Arrow -- DarkWD-ToHitDeb(A), DarkWD-ToHitDeb/Rchg(17), DarkWD-ToHitdeb/Rchg/EndRdx(19), DarkWD-ToHitDeb/EndRdx(19)
Level 1: Snap Shot -- Thundr-Acc/Dmg(A), Thundr-Dmg/EndRdx(3), Thundr-Dmg/Rchg(3), Thundr-Acc/Dmg/Rchg(5), Thundr-Acc/Dmg/EndRdx(5), Thundr-Dmg/EndRdx/Rchg(7)
Level 2: Glue Arrow -- Slow-I(A), RechRdx-I(46), RechRdx-I(48)
Level 4: Aimed Shot -- Thundr-Acc/Dmg(A), Thundr-Dmg/EndRdx(7), Thundr-Dmg/Rchg(9), Thundr-Acc/Dmg/Rchg(9), Thundr-Acc/Dmg/EndRdx(11), Thundr-Dmg/EndRdx/Rchg(11)
Level 6: Ice Arrow -- Lock-Acc/Hold(A), Lock-Acc/Rchg(40), Lock-Rchg/Hold(42), Lock-EndRdx/Rchg/Hold(42), Lock-Acc/EndRdx/Rchg/Hold(43), Lock-%Hold(43)
Level 8: Combat Jumping -- LkGmblr-Rchg+(A), Ksmt-ToHit+(34), Zephyr-Travel(34), Zephyr-ResKB(36)
Level 10: Blazing Arrow -- Thundr-Acc/Dmg(A), Thundr-Dmg/EndRdx(13), Thundr-Dmg/Rchg(13), Thundr-Acc/Dmg/Rchg(15), Thundr-Acc/Dmg/EndRdx(15), Thundr-Dmg/EndRdx/Rchg(17)
Level 12: Acid Arrow -- HO:Lyso(A), HO:Lyso(45), RechRdx-I(45), RechRdx-I(46), Achilles-ResDeb%(46)
Level 14: Super Jump -- Zephyr-Travel(A), Zephyr-Travel/EndRdx(33), Winter-ResSlow(34)
Level 16: Swift -- Run-I(A)
Level 18: Health -- Heal-I(A)
Level 20: Stamina -- Efficacy-EndMod(A), Efficacy-EndMod/Rchg(21), EndMod-I(21)
Level 22: Fistful of Arrows -- Posi-Acc/Dmg(A), Posi-Dmg/EndRdx(23), Posi-Dmg/Rchg(23), Posi-Dmg/Rng(25), Posi-Acc/Dmg/EndRdx(25), Ragnrk-Knock%(50)
Level 24: Explosive Arrow -- Posi-Acc/Dmg(A), Posi-Dmg/EndRdx(27), Posi-Dmg/Rchg(27), Posi-Dmg/Rng(29), Posi-Acc/Dmg/EndRdx(29)
Level 26: Oil Slick Arrow -- Posi-Dmg/Rchg(A), Det'tn-Dmg/Rchg(31), AirB'st-Dmg/Rchg(31), TmpRdns-Dmg/Slow(31), UndDef-DefDeb/Rchg(33), Achilles-ResDeb%(33)
Level 28: Assault -- EndRdx-I(A)
Level 30: Maneuvers -- LkGmblr-Rchg+(A), DefBuff-I(43), EndRdx-I(50)
Level 32: EMP Arrow -- Lock-Acc/Hold(A), Lock-Acc/Rchg(36), Lock-Rchg/Hold(37), Lock-EndRdx/Rchg/Hold(37), Lock-Acc/EndRdx/Rchg/Hold(37), Lock-%Hold(40)
Level 35: Disruption Arrow -- RechRdx-I(A), RechRdx-I(36)
Level 38: Rain of Arrows -- Posi-Acc/Dmg(A), Posi-Dmg/EndRdx(39), Posi-Dmg/Rchg(39), Posi-Dmg/Rng(39), Posi-Acc/Dmg/EndRdx(40)
Level 41: Poison Gas Arrow -- RechRdx-I(A), RechRdx-I(42)
Level 44: Power Build Up -- RechRdx-I(A), RechRdx-I(45)
Level 47: Temp Invulnerability -- S'fstPrt-ResDam/Def+(A), ResDam-I(48), EndRdx-I(48)
Level 49: Aim -- RechRdx-I(A), RechRdx-I(50)
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Level 1: Brawl -- Dmg-I(A)
Level 1: Sprint -- Run-I(A)
Level 2: Rest -- RechRdx-I(A)
Level 1: Vigilance

You will have the equivalent of 45% range defense roughly and yet don't have entangling arrow...explosive arrow would be swapped out for entangling immediately if it were me and then I would call that a great build.

Edit: Actually I am not keen on the order of powers.

That's a good point, I'll move it up some.