I advise against Shuca if you run Hydro Pump because then you only hit Metagross with a normal Hydro Pump, not a Torrent boosted one. Sash allows you to reliably set up rocks, as there are many things that can 1HKO you.
The HP EVs are needed to survive a Bullet Punch from Metagross after his EQ, so Lum is the next best option for Smeargle/Breloom/Rosy, and Chople next for those Infernape.
The HP EVs are needed to survive a Bullet Punch from Metagross after his EQ, so Lum is the next best option for Smeargle/Breloom/Rosy, and Chople next for those Infernape.