I am trying to create an RU/NU tier team with the intention of crushing my friends hopes and dreams, despite them using teams full of ubers they just slap together all the time with no thought or skill involved.

So far I know I'm going to include the following:
- Nasty Plot & Boomburst Chatot (focus sash)
- Cotton Guard Furfrou (leftovers)
- SubSeed Exeggutor (sitrus berry)
- Spikes Garbordor (black sludge)

I'm drawing blanks on what to round the team out with, though. Obviously I need some degree of offensive presence, and I wouldn't mind stealth rocks as well. Rapid spin / defog support not necessary, though, given that none of my friends use entry hazards, ever. Also, since we're inevitably going to end up playing using standard rules (shudder) I can't use more than one instance of each item, so no more lefties or focus sashes.

What pokemon should I use to round this team out? Toxic orb guts Swellow? Choice band Tauros? Belly Drum Slurpuff?