Finally got around to watching your video. Glad you had fun with the Mono-Ghost Hyper Offense :) . To answer some of your questions about EVs: Gholdengos' special defense is minimized so it always OHKO's Imposter Chansey with Moongeist Beam after a Nasty Plot boost. While going to Zoroark-H is generally much safer, having an alternative line of trading with Imposter can be valuable in some circumstances. Likewise, Specterier's special defense is also lowered so it always OHKO's Imposter Chansey at +4 in the event it wins the speed tie, and Lunala's are also adjusted so it always OHKOs Imposter with Astral Barrage.