Just a quick thought here.
You should figure out what you want to farm, then build to protect yourself from those enemies. Defense is much more valuable than resistance in a farming situation, so you should focus on that.
So lets say you'll be farming Battle Maiden. Build for 45% S/L defense. You can still have pretty good resistance. If you're farming demons build for 45% Fire defense. You get the idea.
You could also go another way and build for 32.5% defense to multiple damage types and/or positions. That'll put you 1 small purple away from the soft-cap to those aspects.
Other than that, Rad/Fire is awesome for AoE damage. As long as you can keep yourself alive you'll be a GD farming tyrannosaurus.
Okay so I have never made a blaster and I love making farming toons. I figure if i build enough resistance with IO's it can be possible. Fire/rad really appealed to me because all of the crazy aoe damage it brings to the table. Review my build please and let me know what you think or if I can improve it in anyway. I do smashing/lethal lieutenant farms by the way.
Hero Plan by Mids' Hero Designer 1.957
http://www.cohplanner.com/
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Level 50 Science Blaster
Primary Power Set: Radiation Blast
Secondary Power Set: Fire Manipulation
Power Pool: Speed
Power Pool: Fighting
Power Pool: Leaping
Power Pool: Concealment
Ancillary Pool: Force Mastery
Hero Profile:
Level 1: Neutrino Bolt -- Acc-I(A)
Level 1: Ring of Fire -- Acc-I(A)
Level 2: Irradiate -- Oblit-Dmg(A), Oblit-Acc/Rchg(5), Oblit-Dmg/Rchg(7), Oblit-Acc/Dmg/Rchg(7), Oblit-Acc/Dmg/EndRdx/Rchg(11), Oblit-%Dam(40)
Level 4: Hasten -- RechRdx-I(A), RechRdx-I(5)
Level 6: Super Speed -- Zephyr-Travel(A), Zephyr-Travel/EndRdx(43), Zephyr-ResKB(46)
Level 8: Combustion -- Oblit-%Dam(A), Oblit-Dmg(9), Oblit-Dmg/Rchg(9), Oblit-Acc/Rchg(11), Oblit-Acc/Dmg/Rchg(40), Oblit-Acc/Dmg/EndRdx/Rchg(43)
Level 10: Aim -- AdjTgt-ToHit(A), AdjTgt-ToHit/EndRdx/Rchg(31), AdjTgt-Rchg(33), AdjTgt-ToHit/Rchg(33), AdjTgt-ToHit/EndRdx(33)
Level 12: Fire Sword Circle -- Oblit-Dmg(A), Oblit-Acc/Rchg(13), Oblit-Dmg/Rchg(13), Oblit-Acc/Dmg/Rchg(15), Oblit-Acc/Dmg/EndRdx/Rchg(15), Oblit-%Dam(37)
Level 14: Boxing -- Acc-I(A)
Level 16: Tough -- RctvArm-ResDam(A), GA-3defTpProc(17), RctvArm-ResDam/EndRdx(17), RctvArm-ResDam/Rchg(19), RctvArm-ResDam/EndRdx/Rchg(37)
Level 18: Weave -- LkGmblr-Rchg+(A), LkGmblr-Def(19), LkGmblr-Def/EndRdx(21), LkGmblr-Def/EndRdx/Rchg(21)
Level 20: Build Up -- GSFC-ToHit(A), GSFC-ToHit/Rchg(34), GSFC-ToHit/Rchg/EndRdx(34), GSFC-Rchg/EndRdx(34), GSFC-Build%(36), GSFC-ToHit/EndRdx(37)
Level 22: Blazing Aura -- Armgdn-Dmg(A), Armgdn-Dmg/Rchg(23), Armgdn-Acc/Dmg/Rchg(23), Armgdn-Acc/Rchg(25), Armgdn-Dmg/EndRdx(25), Armgdn-Dam%(27)
Level 24: Cosmic Burst -- ShldBrk-DefDeb(A), ShldBrk-Acc/DefDeb(36), ShldBrk-Acc/Rchg(39), ShldBrk-DefDeb/EndRdx/Rchg(39), ShldBrk-Acc/EndRdx/Rchg(39), ShldBrk-%Dam(50)
Level 26: Neutron Bomb -- SBlastersW-Acc/Dmg(A), SBlastersW-Dmg/Rchg(27), SBlastersW-Acc/Dmg/Rchg(29), SBlastersW-Acc/Dmg/EndRdx(29), SBlastersW-Rchg/Dmg%(31), SBlastersW-Acc/Dmg/EndRdx/Rchg(40)
Level 28: Consume -- RechRdx-I(A)
Level 30: Combat Jumping -- LkGmblr-Rchg+(A), LkGmblr-Def(31)
Level 32: Stealth -- LkGmblr-Rchg+(A)
Level 35: Personal Force Field -- SW-ResDam/Re TP(A), Ksmt-ToHit+(36)
Level 38: Repulsion Field -- EndRdx-I(A)
Level 41: Temp Invulnerability -- RctvArm-ResDam(A), RctvArm-ResDam/EndRdx(42), RctvArm-ResDam/EndRdx/Rchg(42), S'fstPrt-ResDam/Def+(42), RctvArm-ResDam/Rchg(43)
Level 44: Hot Feet -- Oblit-Dmg(A), Oblit-Acc/Rchg(45), Oblit-Dmg/Rchg(45), Oblit-Acc/Dmg/Rchg(45), Oblit-%Dam(46), Oblit-Acc/Dmg/EndRdx/Rchg(46)
Level 47: Burn -- Oblit-Dmg(A), Oblit-Acc/Rchg(48), Oblit-Dmg/Rchg(48), Oblit-Acc/Dmg/Rchg(48), Oblit-Acc/Dmg/EndRdx/Rchg(50), Oblit-%Dam(50)
Level 49: Invisibility -- LkGmblr-Rchg+(A)
Level 1: Brawl -- Acc-I(A)
Level 1: Defiance
Level 1: Prestige Power Dash -- Empty(A)
Level 1: Prestige Power Slide -- Empty(A)
Level 1: Prestige Power Quick -- Empty(A)
Level 1: Prestige Power Rush -- Empty(A)
Level 1: Prestige Power Surge -- Empty(A)
Level 1: Sprint -- EndRdx-I(A)
Level 2: Rest -- RechRdx-I(A)
Level 4: Ninja Run
Level 2: Swift -- Run-I(A)
Level 2: Health -- Numna-Regen/Rcvry+(A), Mrcl-Rcvry+(3)
Level 2: Hurdle -- Jump-I(A)
Level 2: Stamina -- P'Shift-EndMod(A), P'Shift-End%(3)
Level 50: Cardiac Core Paragon
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