As I embark on my quest to achieve 800 points on the BS and hopefully, become the first ever DB user to become Expert via BS, I must pray to our God, Arceus.

''Our Arceus, which art in PokéHeaven,
hallowed be thy Pokémon games;
thy Kinglers come;
thy battling will be done,
in Johto as it is in Hoenn.
...Give us this day our Hyper Potions.
And forgive us our poor nicknames,
as we forgive those rivals that try to defeat us.
And lead us not into dark caves;
but deliver us from evil warehouses.
For thine is the power,
the badges, and the glory,
for ever and ever... Until my GameBoy dies.
Aipom.''
Ok, and here my rate starts. Team looks good, just a couple of problems and I'm here to fix them.
So if you actually want a sweeping Regice, this set is the way to go:
Regice @ Life Orb
Trait: Clear Body
EVs: 4 Def / 252 SAtk / 252 Spd
Modest Nature (+SAtk, -Atk)
- Ice Beam
- Thunderbolt
- Rock Polish
- Focus Blast
After a Rock Polish boost, he has the Ability to outspeed literally everything in NU, exept Ninjask, I think. Modest Nature + Life Orb give him terrifying sweeping abilities. Ice Beam and Thunderbolt make the BoltBeam coverage while Focus Blast is coverage against Rock and Steel types.
On to Machoke. If you want this team to have a good Fighting type, try Gurdurr. He's the most popular Eviolite user now.
Gurdurr (M) @ Eviolite
Trait: Guts
EVs: 252 HP / 252 Atk / 4 SDef
Adamant Nature (+Atk, -SAtk)
- Bulk Up
- Drain Punch
- Mach Punch
- Ice Punch
Ludicolo ain't doing much to your team, so I'll be adding a Water type to your team. A good one =D.
Samurott (M) @ Salac Berry
Trait: Torrent
EVs: 4 HP / 252 SAtk / 252 Spd
Timid Nature
- Substitute
- Surf
- Ice Beam
- Grass Knot
SubSalac is a great set for him. Activating Torrent + Salac Berry is relatively easy to do by spamming Substitute.
For Dragonair, try a fully offensive set, it seems to work better.
Dragonair @ Eviolite
Trait: Shed Skin
EVs: 252 Atk / 252 Spd / 4 HP
Adamant Nature (+Atk, -SAtk)
- Dragon Dance
- Outrage
- ExtremeSpeed
- Waterfall / Rest
Or another Dragon type who received some neat tools from BW2:
Fraxure @ Life Orb / Eviolite
Trait: Mold Breaker
EVs: 252 Atk / 252 Spd / 4 HP
Adamant Nature (+Atk, -SAtk) or Jolly Nature (+Spd, -SAtk)
- Dragon Dance
- Outrage
- Superpower / Low Kick
- Aqua Tail / Dragon Tail
This guy has a lot of options but all in all, he's a great new threat in NU. I would be more tempted by Fraxure than by Dragonair, TBH.
On to Granbull. I have a better team supporting than him.
Miltank (F) @ Leftovers
Trait: Thick Fat
EVs: 252 HP / 4 Atk / 252 SDef
Careful Nature (+SDef, -SAtk)
- Milk Drink
- Heal Bell
- Body Slam
- Stealth Rock
He will take Ice attacks for your Dragon. And sets up Rocks. And can paralyse with Body Slam. And supports your team with Heal Bell. And is a great SDef wall. =D
On to Lampent. Replacing for Haunter. More big offensive presence;
Haunter (M) @ Choice Scarf
Trait: Levitate
EVs: 252 SAtk / 4 HP / 252 Spd
Timid Nature (+Spd, -SAtk)
- Shadow Ball
- Sludge Bomb
- Hidden Power [Ground]
- Thunderbolt
Hope I helped you!