I'm persuming you're going to evolve all your pokemon. For your last last pokemon I think a wall is needed, so Altaria can work well. Just tell me (or someone else) if you want to go for it and I'll be happy to make a moveset for it.
Ninetails @Life Orb/ Focus Sash (for physical attacks)
Flash Fire
Modest
252 sp. atk, 252 spd, 6hp
-Flamethrower/ Heat Wave
-Energy Ball
-Nasty Plot
-Filler
Flamethrower or Heat Wave for STAB. Heat Wave being slightly more powerful, but less accurate and requires breeding. Energy Ball for Ground, rock and Water coverage. Nasty Plot to raise you stats, and sweeping would be really hard without it (because of a base sp. attack of 81). In the last slot, HP Ice can be used as it has great coverage, destroying dragons (with their 4x weaknesses). Dark Pulse and Extransory can be used, although they have bad coverage. Hypnosis can also be used, but that means any dragon will completely wall you.
Ampharos @Wise Glasses
Static
Modest
-Thunderbolt/ Discharge
-Focus Blast
-Signal Beam
-Power Gem
Thunderbolt or Discharge for STAB. Focus Blast for steel coverage and other for overage as well. Hidden Power Ice/ Grass can also work over one of those moves for coverage against ground types.
Venasaur @Leftovers
Overgrow
Calm
-Energy Ball/ Giga Drain
-Sludge Bomb
-Hidden Power Ground/ Fire
-Ingrain/ Amniesia/ Skull Bash
Energy Ball and Sludge Bomb for STAB. HP Ground to deal with fire types, HP Fire to deal with Ice types. Ingrain heals some HP each turn, as well as Leftovers. Amneisia to raise sp. def. Skull Bash raises def, and is a powerful attack for the next turn. If you choose Amniesia or Skull Bash, go for giga Drian over Energy Ball for some extra healing.
Snorelax @Leftovers
Thick Fat
Adamant/ Careful
-Body Slam
-Earthquake
-Zen Headbutt/ Crunch/ Rock Slide/ Brick Break/ Rest
-Curse/ Move mentioned above/ Sleep Talk
Body Slam for STAB, and a nice 30% paralysis chance. EQ for power and coverage. Zen Headbutt deals with fighting types. Crunch, Rock Slide and Brick Break all have nice coverage. Curse to raise stats. Rets-Talk combo can also be used and although it's unreliable, it's the only way (aside from leftovers) to heal.
Dragonite @Life Orb
Inner Focus
Jolly
252 atk, 252 spd, 6hp
-Dragon Claw/ Rush
-Earthquake
-Fire Punch
-Dragon Dance
Dragon Claw or Dragon Rush for STAB. EQ for coverage and power. Fire ounch for coverage against Ice types, and so your not walled by Skamory. Dragon Dance to make it's attacks hit harder, and more importantly to raise it's low speed.