Steambox

I'm trying this build out to see how it plays.

Villain Plan by Mids' Villain Designer 1.942
http://www.cohplanner.com/
Click this DataLink to open the build!
Dark Energy: Level 50 Mutation Stalker
Primary Power Set: Dark Melee
Secondary Power Set: Energy Aura
Power Pool: Leaping
Power Pool: Fighting
Power Pool: Speed
Power Pool: Concealment
Ancillary Pool: Leviathan Mastery
Villain Profile:
Level 1: Shadow Punch -- C'ngImp-Acc/Dmg(A), C'ngImp-Dmg/Rchg(3), C'ngImp-Acc/Dmg/Rchg(3), C'ngImp-Acc/Dmg/EndRdx(5), SipInsght-Acc/ToHitDeb(5), SipInsght-ToHitDeb/EndRdx/Rchg(7)
Level 1: Hide -- GftotA-Def(A), GftotA-Run+(23)
Level 2: Smite -- C'ngImp-Acc/Dmg(A), C'ngImp-Dmg/Rchg(7), C'ngImp-Acc/Dmg/Rchg(9), C'ngImp-Acc/Dmg/EndRdx(9), SipInsght-Acc/ToHitDeb(11), SipInsght-ToHitDeb/EndRdx/Rchg(11)
Level 4: Kinetic Shield -- GftotA-Def/EndRdx(A), GftotA-Def/EndRdx/Rchg(13), GftotA-Def(13), GftotA-Run+(15)
Level 6: Assassin's Eclipse -- Mako-Acc/Dmg(A), Mako-Dmg/EndRdx(15), Mako-Dmg/Rchg(17), Mako-Acc/EndRdx/Rchg(17), Mako-Acc/Dmg/EndRdx/Rchg(19), Mako-Dam%(19)
Level 8: Power Shield -- GftotA-Def/EndRdx(A), GftotA-Def/EndRdx/Rchg(21), GftotA-Def(21), GftotA-Run+(23)
Level 10: Entropy Shield -- EndRdx-I(A)
Level 12: Placate -- RechRdx-I(A), RechRdx-I(25)
Level 14: Build Up -- AdjTgt-ToHit/Rchg(A), AdjTgt-ToHit/EndRdx/Rchg(27), AdjTgt-Rchg(27)
Level 16: Combat Jumping -- Ksmt-ToHit+(A)
Level 18: Siphon Life -- C'ngImp-Acc/Dmg(A), C'ngImp-Dmg/Rchg(29), C'ngImp-Acc/Dmg/Rchg(29), Nictus-Heal(31), Nictus-Heal/HP/Regen/Rchg(31), Nictus-Acc/EndRdx/Heal/HP/Regen(31)
Level 20: Super Jump -- Jump-I(A)
Level 22: Boxing -- Acc-I(A)
Level 24: Hasten -- RechRdx-I(A), RechRdx-I(33), RechRdx-I(33)
Level 26: Stealth -- Ksmt-Def/EndRdx(A), Ksmt-EndRdx/Rchg(33), GftotA-Run+(34)
Level 28: Energy Drain -- Efficacy-EndMod(A), Efficacy-EndMod/Rchg(34), Efficacy-EndMod/Acc/Rchg(36), Efficacy-Acc/Rchg(36), Efficacy-EndMod/Acc(36), Efficacy-EndMod/EndRdx(37)
Level 30: Super Speed -- Zephyr-Travel(A), Zephyr-Travel/EndRdx(43), EndRdx-I(48), Clrty-Stlth(48), Winter-ResSlow(50)
Level 32: Midnight Grasp -- C'ngImp-Acc/Dmg(A), C'ngImp-Dmg/Rchg(37), C'ngImp-Acc/Dmg/Rchg(37), C'ngImp-Acc/Dmg/EndRdx(39), SipInsght-Acc/ToHitDeb(39), SipInsght-ToHitDeb/EndRdx/Rchg(39)
Level 35: Tough -- ImpArm-ResDam/EndRdx(A), ImpArm-EndRdx/Rchg(40), ImpArm-ResDam/EndRdx/Rchg(40), ImpArm-ResDam(46)
Level 38: Overload -- RedFtn-Def/EndRdx(A), RedFtn-Def/Rchg(40), RedFtn-EndRdx/Rchg(42), RedFtn-Def/EndRdx/Rchg(42), RedFtn-Def(50), RechRdx-I(50)
Level 41: Weave -- GftotA-Def/EndRdx(A), GftotA-Def/EndRdx/Rchg(42), GftotA-EndRdx/Rchg(43), GftotA-Run+(48)
Level 44: Spirit Shark -- Thundr-Acc/Dmg(A), Thundr-Acc/Dmg/Rchg(45), Thundr-Acc/Dmg/EndRdx(45), Thundr-Dmg/EndRdx/Rchg(45), Dev'n-Acc/Dmg/EndRdx/Rchg(46)
Level 47: Hibernate -- Dct'dW-Heal/Rchg(A)
Level 49: Energy Protection -- S'fstPrt-ResDam/Def+(A)
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Level 1: Brawl -- Acc-I(A)
Level 1: Sprint -- Run-I(A)
Level 2: Rest -- RechRdx-I(A)
Level 1: Assassination
Level 4: Ninja Run
Level 2: Swift -- Run-I(A)
Level 2: Hurdle -- Jump-I(A)
Level 2: Health -- Numna-Regen/Rcvry+(A), Mrcl-Rcvry+(25)
Level 2: Stamina -- P'Shift-EndMod(A), P'Shift-EndMod/Rchg(34), P'Shift-EndMod/Acc(43), P'Shift-End%(46)

I want to build a DM/Energy Aura stalker that I could play in all the PVP zones on Freedom. I just can't find any good guides or advice on making one. It would be nice to get to 50. Then be able to go into any zone and not worry that I didn't pick this or that power at a certain level.

Could someone point me in the right direction with some build advice?

Thanks!