We dont know what else you may have already taken. I think people may want to see a build from mids or the like. 
It would help.
Other than that: I would probably say go for tough, mainly because I like having more resistance on top of that of what electric armor already has.
" I don't let me kids play on the Freedom Server" -Oya
if your gonna be any good id take tough/weave/cj and slot for s/l def. 4 slot boxing with kinetic combats and use the kb proc to save inf. you wanna be at 35 s/l def and over 30 melee. also have dark obliteration and darkest night for survivability and added aoe. ive got my build posted on other /elec threads but heres what i run. and i can tank +4/8 rikti.
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Out of curiosity, why scorpion over ghost widow? Gloom is your best available attack as an electric melee, and darkest night is a spectacular defensive power.
I will cop to being overly enthusiastic about ghost widow's powers =)
"Hmm, I guess I'm not as omniscient as I thought" -Gavin Runeblade.
I can be found, outside of paragon city here.
Thank you everyone at Paragon and on Virtue. When the lights go out in November, you'll find me on Razor Bunny.
I don't normally put much stuff into MIDS, and this guy I had a good idea what I was going for as I had taken an elec/elec scrapper to 50 already.
Since I don't have access to the same Epic pools, I'm not sure what to put into his last two powers. 
And I took Black Scorpion because I had already done Ghost Widow and Scirroco's arcs. I've got Mako on my Fire/Therm Corruptor so I can run all the patron arcs.
I'm funny like that.
My COX Fanfiction:
Blue's Assembled Story Links
The main thing I am doing with this guy is beating up Rikti in RWZ. I hope to eventually do the Lady Grey TF with him.
He's now 45. Black Scorpion is his patron.
I have two power picks left and I'm not sure what to take on them.
Already have Taunt for my eventual Lady Grey TF.
What would you recommend for my final two powers?
I could possibly see taking Thunderclap-- again, to help with the TF-- and/or another Travel power as my account is old enough I can get the actual travel power without having to pick one of the prereqs. So one idea is Thunderclap/Super jump. (He already has super speed.) I'm not crazy about Thunderclap at all.
I could see taking Tough ... but that means throwing away the other power for Boxing or Kick.
I could maybe take a couple of patron powers.
Or the Medicine Path.
Anyone have some suggestions?
My COX Fanfiction:
Blue's Assembled Story Links