Keep Macargo, it make a fire type.
Cradily, good Grass Type.
Aerodactyl, aswome choice for a Flying Pokemon
Tyranitar, This will be your main Powerhouse for your team, Keep this one it is an awsome Pokemon.
Armaldo, Trade this one Kaputops or Omastar, so you have a water type.
Rampardos, By far is the BEST Rock Pokemon EVER, the only pokemon that could come close to beating my Rampardos was my Bastidon.
Rampardos
Zen HeadButt
Head Smash
Earthquake
Stane Edge
Bastidon
Earthquake
Flash Cannon
Endure And/or Protect
Stone Edge