Just thinking about the VFX here, if it’s possible/wanted to go with more of a blast, something more like Snoke’s quick little floor zap that he uses on Kylo might be better or more appropriate than a traditional channel of lightning.
That was actually the original idea as well. It wouldn’t hurt to rip the original sound effects from TLJ imo, but Sherlock didn’t like that for some reason. Either that or just do the hand crackle.