My only question, is what you mean by -T5? (As far as I am aware, T3 is the max level of an alchemist.)
Also, as long as OC consent is required I think there is no problem with this.
holy crap YES +100 I have had a similar idea in the back of my head for months now. I am glad to see something with a similar theme, written way better than I ever could!
The only options with VOIDAL electric evocation are as follows:
Make overpowered lightning magic.
Or make almost pointless shock based magic.
I am sorry, its best to let it slumber eternally. It adds, barely anything, to roleplay either way.