It depends what you need it for.... Generally, Umbreon is a better Pokemon.
Umbreon @ Leftovers
Bold (+Def, -Atk) or Impish (+Def, -SAtk)
252 HP / 150 Def / 108 SDef
- Curse
- Taunt
- Baton Pass
- Moonlight
After you do 4 Curses, Baton Pass to:
Jolteon @ Leftovers
Bold (+Def, -Atk) or Calm (+SDef, -Atk) or Timid (+Spd, -Atk) or Modest (+SAtk, -Atk)
252 HP / 252 SDef / 4 SAtk
- Agility
- Substitute
- Thunderbolt
- Baton Pass
After 2 Agility, Baton Pass to something like this:
Aerodactyl @ White Herb
Adamant (+Atk, -SAtk) or Jolly (+Spd, -SAtk)
252 Atk / 252 Spd / 4 SDef
- Taunt
- Rock Slide
- Earthquake
- Double-Edge / Hidden Power [Flying] / Aerial Ace
You should be able to sweep afterwords. After -4 Spd, +4 Atk and +4 Def from Curse, then +4 Spd from Agility, you'll have the sweep. Probably use Jolly on it, because you always want to get the first strike. If you can, try to Baton Pass a Substitute to Aerodactyl.
For your team, I'd likely say:
Replace Absol with Umbreon
Replace Pikachu with Jolteon
Replace Pidgeot with Aerodactyl