Lightsider

My DM/SR Soul Mastery Brute loses endurance in a blink of an eye, I will be using mostly for pve, I was thinking of using 3 Enzymes HO's on all my attacks, and Darkest Night and Cytoskeleton on all my toggle defenses. Would this help with my end drain, also would like opinion on IO's but have no idea where to start with them. Here's my current build it's only got SO's.

Villain Plan by Mids' Villain Designer 1.953
http://www.cohplanner.com/

Click this DataLink to open the build!

Level 50 Natural Brute
Primary Power Set: Dark Melee
Secondary Power Set: Super Reflexes
Power Pool: Leaping
Power Pool: Fighting
Power Pool: Leadership
Ancillary Pool: Soul Mastery

Villain Profile:
Level 1: Shadow Punch -- Acc(A), Acc(3), Dmg(7), Dmg(13), Dmg(36), ToHitDeb(39)
Level 1: Focused Fighting -- DefBuff(A), DefBuff(15), DefBuff(19)
Level 2: Smite -- Acc(A), Acc(3), Dmg(7), Dmg(13), Dmg(36), ToHitDeb(37)
Level 4: Shadow Maul -- Acc(A), Acc(5), Dmg(5), Dmg(11), Dmg(34), ToHitDeb(37)
Level 6: Focused Senses -- DefBuff(A), DefBuff(17), DefBuff(21)
Level 8: Siphon Life -- Acc(A), Acc(9), Dmg(9), Dmg(11), Dmg(34), ToHitDeb(37)
Level 10: Practiced Brawler -- RechRdx(A), RechRdx(15)
Level 12: Agile -- DefBuff(A), DefBuff(19), DefBuff(23)
Level 14: Super Jump -- Jump(A)
Level 16: Dodge -- DefBuff(A), DefBuff(17), DefBuff(21)
Level 18: Dark Consumption -- Acc(A), Acc(29), EndMod(31), EndMod(40), EndMod(43), RechRdx(46)
Level 20: Evasion -- DefBuff(A), DefBuff(23), DefBuff(27)
Level 22: Combat Jumping -- DefBuff(A), DefBuff(46), DefBuff(46)
Level 24: Touch of Fear -- Acc(A), Acc(27), Acc(29), ToHitDeb(40), ToHitDeb(40), ToHitDeb(45)
Level 26: Boxing -- Acc(A)
Level 28: Lucky -- DefBuff(A), DefBuff(48), DefBuff(50)
Level 30: Tough -- ResDam(A), ResDam(31), ResDam(31)
Level 32: Midnight Grasp -- Acc(A), Acc(33), Dmg(33), Dmg(33), Dmg(34), ToHitDeb(36)
Level 35: Quickness -- Run(A)
Level 38: Elude -- RechRdx(A), RechRdx(39), RechRdx(39)
Level 41: Gloom -- Acc(A), Acc(42), Dmg(42), Dmg(42), Dmg(43), ToHitDeb(43)
Level 44: Darkest Night -- ToHitDeb(A), ToHitDeb(45), ToHitDeb(45)
Level 47: Weave -- DefBuff(A), DefBuff(48), DefBuff(48)
Level 49: Maneuvers -- DefBuff(A), DefBuff(50), DefBuff(50)
------------
Level 1: Brawl -- Acc(A)
Level 1: Fury
Level 1: Sprint -- Run(A)
Level 2: Swift -- Run(A)
Level 2: Health -- Heal(A)
Level 2: Hurdle -- Jump(A)
Level 2: Stamina -- EndMod(A), EndMod(25), EndMod(25)
Level 2: Rest -- RechRdx(A)
Level 4: Ninja Run