Question

NOTE: I'm not listing items because I'm using growth-assistance items at this time. Suggestions are greatly appreciated. Also, all pokemon except Scolipede can be replaced. No egg moves, please.

Scolipede-M Physical sweeper
Naughty nature Ability: Poison Point

Rock Slide
E-Quake
X-scissor
Poison Jab

Mandibuzz-F Wall
Jolly nature Ability: Big Pecks

U-turn
Rock Tomb
Payback
Fly

Darmanitan-M Physical Sweeper
Modest nature (don't ask) Ability: Sheer Force

Brick Break
Stone Edge
E-quake
Fire Punch

Answer 1

Well, Scolipede's set looks pretty good to me. When you say trio, I'm assuming you mean Triple battle?

Anyway, give Scolipede either Choice Band or Muscle Band.

Mandibuzz:
Since it's a Wall, give it Leftovers.
U Turn is good
Try Attract, as Mandibuzz is always female
Payback
and Punishment.

Okay, replace Darmintian with Carracosta, if you can. If you used your fossil on Archeops, well, I don't know. Maybe Jellicent.

Carracosta: Tank. Try to get Relaxed or Impish Nature.

Item:Zoom Lens

Curse
Stone Edge
Aqua Tail
Crunch/E-Quake