Volcarona: At +1 speed from quiver dance, speed is still critical. Give it 4 Def/252 SpA/252 Spe Jolly.
Vespiquen: A Pokémon with so many weaknesses shouldn't be stalling. Besides, you already have a bug flying Pokémon. Seeing how so many of your Pokémon are weak to rock, you should replace it with Heracross.
Heracross @ Choice Scarf
Ability: Moxie
EVs: 252 Atk / 4 Def / 252 Spe
Jolly Nature
-Close Combat
-Megahorn
-Knock Off
-Stone Edge
Send it out late-game, preferably after all of your opponent's Pokémon are weak to one of your attacks. With a choice scarf and moxie, it should be able to sweep just about everything, granted they don't resist your attacks. Close combat and megahorn are STAB, knock off covers psychic and ghost, and stone edge covers fire and flying.
Yanmega: Because it has so many weaknesses, making it more defensive isn't very viable. Replace assault vest with life orb and give it 252 SpA/4 SpD/252 Spe Modest. Replace ancient power with hidden power ground to cover rock, steel, and electric.
Scizor: Seeing how common choice scarves are in Monotype, thief can be dangerous. Replace sitrus berry with life orb and thief with roost.
Armaldo: Support Armaldo doesn't need very much physical attack investment. Give it 252 HP/96 Def/160 SpD Careful.
