Neither Jolting Chain nor Fissure accept the ATO proc (according to Mids'), but I'd definately put a FF proc in the latter. Tesla Cage (or perhaps Chain Fences) is a good place to put the ATO proc. Careful not to use to many procs though, as far as I can tell your build will be pretty slot-starved if you do.
@Steel
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Huh. Guess you can't put them in there (just checked in-game). Oh well. And yeah, I know. I only have a couple slotted in at the moment. Just kinda messing around, seeing what I like and don't like until I get him to 50. 
Where is a good place to put the Controller ATO set in this build? Chain Fences?
Let me never fall into the vulgar mistake of dreaming that I am persecuted whenever I am contradicted.
~Ralph Waldo Emerson
"I was just the one with the most unsolicited sombrero." - Traegus
Chain Fences is an excellent place for the ATO set, unless you'd rather frankenslot it with purple procs for some extra control. Personally I would put it in Tesla Cage because Elec/ lacks somewhat in the ST damage department (that's why I currently have 5 Decimations + the Unbreakable Constraint proc in there on my Elec/Rad, but I intend to change that to the ATO set) and the ATO proc helps there, but good arguments can be made for placing it in either power.
Chain Fences definitely benefits from its enhancement values, especially the endurance reduction if you spam it a lot, and the proc cranks your AoE damage up a notch.
@Steel
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Hmm... so maybe I should throw it in Cages. I have Jolting Chain pimped out too much already, and I can't throw it in Fissure (I don't think). I'll mess with it and see how it works out.