@Stak
Machamp: go with knock off so it won't be useless against ghost types. Go with bullet punch if you really need priority, if not swap it with ice punch.
typhlosion: Eruption is typhlosion main attack, so life orb isn't ideal. Maybe use choice scarf, for outspeeding and avoiding dmg, or choice specs, for maximum power. Also, lava plume for flamethrower, unless you want to hit everyone in doubles( even your other pokemon).
Manetric: Heat rotom, volt absorb lanturn and lightning rod seaking can be a problem. Go with snarl if you are worried about these, if not, keep the charge beam.
Tentacruel: Surf or scald for acid spray.
Ferrothorn: Looks good. But. You already have a sp defensive wall in tentacruel, so all those points is sp def feels like a waste, Why not: brave with 252HP 96 Atk 162 Def. Like this, power whip and Gyro ball do more dmg and you have a defensive wall. If a sp attacker appears, just switch in tentacruel
Lycanroc Dusk: Drill run is normally more powerful than stomping tantrum, unless the previous move fails. So I would go with either rock slide+drill run or stone edge+stomp tantrum. Also give it a life orb until Lyc-z is available.