Inv/SS Tank build question

Do you think it would be worth it to drop Invincibility, and Tough Hide, in order to get Heal Self? I know I would lose about 15% recharge bonus and some Def, but I think it would help my tank to have another heal besides Dull Pain.

Hero Plan by Mids' Hero Designer 1.601
http://www.cohplanner.com/

Click this DataLink to open the build!

Lucider PvP: Level 50 Natural Tanker
Primary Power Set: Invulnerability
Secondary Power Set: Super Strength
Power Pool: Speed
Power Pool: Leaping
Power Pool: Fitness
Power Pool: Fighting
Ancillary Pool: Earth Mastery

Hero Profile:
Level 1: Resist Physical Damage -- S'fstPrt-ResDam/Def+:30(A), RctvArm-ResDam/EndRdx/Rchg:40(3), RctvArm-ResDam:40(9), RctvArm-ResDam/EndRdx:40(43), RctvArm-ResDam/Rchg:40(46)
Level 1: Jab -- Stpfy-Acc/Rchg:30(A), Stpfy-EndRdx/Stun:50(21), Stpfy-Stun/Rng:30(33)
Level 2: Temp Invulnerability -- TtmC'tng-ResDam:50(A), TtmC'tng-ResDam/EndRdx:50(3), TtmC'tng-ResDam/Rchg:50(13)
Level 4: Dull Pain -- Numna-Heal/Rchg:50(A), Numna-Heal/EndRdx/Rchg:50(5), Numna-EndRdx/Rchg:50(5), Mrcl-Heal/Rchg:40(7), Mrcl-EndRdx/Rchg:40(11), Mrcl-Heal/EndRdx/Rchg:40(17)
Level 6: Hasten -- RechRdx-I:50(A), RechRdx-I:50(7)
Level 8: Unyielding -- ImpArm-ResDam/EndRdx:40(A), ImpArm-ResDam/EndRdx/Rchg:40(9), ImpArm-ResDam/Rchg:40(11), ImpArm-ResDam:40(17)
Level 10: Combat Jumping -- Ksmt-ToHit+:30(A), LkGmblr-Rchg+:50(13), LkGmblr-Def:50(15)
Level 12: Hurdle -- Jump-I:50(A)
Level 14: Super Jump -- ULeap-Stlth:50(A), HO:Micro(15)
Level 16: Super Speed -- HO:Micro(A)
Level 18: Invincibility -- LkGmblr-Rchg+:50(A), LkGmblr-Def:50(19), LkGmblr-Def/EndRdx:50(19)
Level 20: Health -- Numna-Regen/Rcvry+:50(A), Panac-Heal/+End:50(21), Mrcl-Rcvry+:40(48)
Level 22: Stamina -- P'Shift-EndMod:50(A), P'Shift-EndMod/Rchg:50(23), P'Shift-EndMod/Acc:50(23), P'Shift-EndMod/Acc/Rchg:50(31)
Level 24: Knockout Blow -- Mako-Acc/Dmg/EndRdx/Rchg:50(A), Mako-Dmg/Rchg:50(25), Mako-Acc/Dmg:50(25), Mako-Dam%:35(27), ExStrk-Dam%:20(27), Zinger-Dam%:40(29)
Level 26: Taunt -- Mocking-Taunt:50(A), Mocking-Taunt/Rchg/Rng:50(34), Mocking-Acc/Rchg:50(39), Mocking-Taunt/Rng:50(40), Mocking-Rchg:50(40), Mocking-Taunt/Rchg:50(43)
Level 28: Rage -- AdjTgt-ToHit/Rchg:50(A), AdjTgt-ToHit/EndRdx/Rchg:50(29), AdjTgt-EndRdx/Rchg:50(31), AdjTgt-ToHit:50(31), AdjTgt-ToHit/EndRdx:50(33), Rec'dRet-Pcptn:20(33)
Level 30: Resist Energies -- RctvArm-ResDam:40(A), RctvArm-ResDam/EndRdx:40(37), RctvArm-ResDam/Rchg:40(40), RctvArm-ResDam/EndRdx/Rchg:40(42)
Level 32: Resist Elements -- RctvArm-ResDam:40(A), RctvArm-ResDam/EndRdx/Rchg:40(34), RctvArm-ResDam/Rchg:40(34), RctvArm-ResDam/EndRdx:40(37)
Level 35: Hurl -- Dev'n-Acc/Dmg:50(A), Dev'n-Acc/Dmg/EndRdx/Rchg:50(36), Dev'n-Acc/Dmg/Rchg:50(36), Dev'n-Dmg/Rchg:50(36), ExStrk-Dam%:20(37), Zinger-Dam%:50(42)
Level 38: Tough Hide -- LkGmblr-Rchg+:50(A), LkGmblr-Def:50(39), LkGmblr-Def/EndRdx:50(39)
Level 41: Stone Prison -- Dev'n-Acc/Dmg:50(A), TotHntr-Dam%:50(42), Dev'n-Dmg/EndRdx:50(43), Dev'n-Acc/Dmg/EndRdx/Rchg:50(45), Dev'n-Acc/Dmg/Rchg:50(45), GJ-Dam%:50(45)
Level 44: Fossilize -- Apoc-Dam%:50(A), Apoc-Dmg/Rchg:50(46), Apoc-Acc/Dmg/Rchg:50(46), Apoc-Acc/Rchg:50(48), Apoc-Dmg/EndRdx:50(48), UbrkCons-Dam%:50(50)
Level 47: Boxing -- Empty(A)
Level 49: Tough -- RctvArm-ResDam:40(A), RctvArm-ResDam/EndRdx:40(50), RctvArm-ResDam/EndRdx/Rchg:40(50)
------------
Level 1: Brawl -- Acc-I:50(A)
Level 1: Sprint -- EndRdx-I:50(A)
Level 2: Rest -- IntRdx-I:50(A)
Level 1: Gauntlet
------------
Set Bonus Totals:

• 15% DamageBuff(Smashing)
• 15% DamageBuff(Lethal)
• 15% DamageBuff(Fire)
• 15% DamageBuff(Cold)
• 15% DamageBuff(Energy)
• 15% DamageBuff(Negative)
• 15% DamageBuff(Toxic)
• 15% DamageBuff(Psionic)
• 9.25% Defense(Smashing)
• 9.25% Defense(Lethal)
• 6.13% Defense(Fire)
• 6.13% Defense(Cold)
• 8% Defense(Energy)
• 8% Defense(Negative)
• 4.88% Defense(Psionic)
• 6.13% Defense(Melee)
• 5.5% Defense(Ranged)
• 4.56% Defense(AoE)
• 4.05% Max End
• 9% Enhancement(Accuracy)
• 45% Enhancement(RechargeTime)
• 5% FlySpeed
• 379.5 HP (20.3%) HitPoints
• 5% JumpHeight
• 5% JumpSpeed
• MezResist(Held) 2.75%
• MezResist(Immobilize) 7.7%
• MezResist(Sleep) 2.2%
• 20% Perception
• 10% (0.17 End/sec) Recovery
• 82% (6.42 HP/sec) Regeneration
• 1.26% Resistance(Energy)
• 1.26% Resistance(Negative)
• 5% RunSpeed

You can't have more than 4 powerpools.

Drop Boxing & Tough. Replace them with Aid Other/Stimulant and Aid Self.

Oh right, forgot about that....I lose a lot of resistance without tough...but I'm guessing it's worth it.