Is this team well enough organized for Pokèmon HG/SS?

Question

Typhlosion ♂ (Fire) @ Choice Scarf

Trait: Flash Fire
EVs: 4 Def / 252 SAtk / 252 Spd
Modest Nature (+SAtk, -Atk)
- Eruption
- Solar Beam
- Lava Plume
- Hidden Power [Rock]

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Jolteon ♀ (Electric) @ Choice Specs

Trait: Volt Absorb
EVs: 4 HP / 252 SAtk / 252 Spd
Timid Nature (+Spd, -Atk)
- Volt Change
- Shadow Ball
- Signal Beam
- Hidden Power [Ground]

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Arcanine ♂ (Fire) @ Heat Rock

Trait: Intimidate
EVs: 252 Atk/252 Spd/4 HP
Adamant Nature (+Atk, -SAtk)
- Flare Blitz
- Close Combat
- Extreme Speed
- Wild Charge / Crunch

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Slowbro ♂ (Psychic, Water) @ Leftovers

Trait: Regeneration
EVs: 116 HP / 176 Def / 216 SDef
Modest Nature (+SAtk, -Atk)
- Calm Mind
- Boil Over
- Psycho Shock
- Fire Blast

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Pidgeot ♂ (Normal, Flying) @ King's Rock

Trait: Tangled Feet
EVs: 252 Atk / 4 Def / 252 Spd
Jolly Nature (+Spd, -SAtk)
- Brave Bird
- Frustration
- U-turn
- Steel Wing

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Lapras ♀ (Water, Ice) @ Leftovers

Trait: Water Absorb
EVs: 252 Atk / 4 Def / 252 Spd
Jolly Nature (+Spd, -SAtk)
- Dragon Dance
- Waterfall
- Ice Shard
- Level Field

I would also love to incorporate Gengar into my team, but with whom to swap him with is my concern.
In my game, this team is pretty stable and steady, though at times we encounter a few bumpy battles—if there are any fixable flaws, please don't hesitate to tell me!
Critiques are totally fine!

Comments

You got a nice team ! But you should have more balance on your attacks on your Typhlosion.  You got 2 fire attacks. I recommend replace it for other attack like Earthquake. Or you can deleted one of your fire attacks for Sunny Day. With Sunny Day you can use Solabeam without charge and your fire attack will be more powerful.  As for your Lapras you can teach her better moves in my opinion.  Some good moves that Lapras can have are Confuse Ray, Thunderbolt, Icebeam and Psychic. There are a lots of great moves for her. Your Jolteon and Arcanine are great. The only think its that you got 2 fire pokemons but its ok they seem fine. As for Gengar its a great option if you teach him a really balance and different moves (if they are sp attack better). Sorry for the long reply. I'm very detailed:).

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you could swap in gengar for pidgeot

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Great team!