Pokemon Platinum Team Building Advice?

i have a current team of:





Pokemon 1: Swampert


Nature: Careful Abiltity: Torrent


Movepool: Ice Beam, Stealth Rock, Surf and Earthquake





Pokemon 2: Sceptile


Nature: Sassy


Abilty: Overgrow


Movepool: Dragon Claw, Leaf Blade, Hidden Power and Agilty





Pokemon 3: Infernape


Nature: Lonely


Abilty: Blaze


Movepool: Flare Blitz, Swords Dance, Close Combat and Grass Knot





Pokemon 4: Metagross


Nature: Bold


Abilty: Clear Body


Movepool: Bullet Punch, Meteor mash, Explosion and Psychic





Pokemon 5: Undecided (perhaps Gengar?)





Pokemon 6: Undecided





Could you (anyone) reccomend any changes in the team/moves etc and suggest any pokemon to fill the last two slots please





thanksPokemon Platinum Team Building Advice?
Swampert is good, replace ice beam with ice punch or avalanche





Sceptile is fine





Infernape should have thunder punch instead of grass knot (takes care of water types either way)





Metagross is good, but replace bullet punch with earthquake





#5: Gengar


Nature: Modest


Shadow Ball


Dark Pulse


Giga Drain/Thunder/Focus Blast


Sludge Bomb





#6 Jolteon


Nature: Quiet


Thunder/Thunderbolt/Discharge


Shadow Ball


Signal Beam


Agilty

eye color