Buy 5 Potions

Don't swap moves on gambler

Buy 11 X Accs, 6 X Speeds, 3 X Specs, 3 X Atks, 3 Supers

Teach RS in slot 4

Arbok: Thrash

Silph Rival: X Acc, X Speed, Drill x5

After Silph Rival Elixir and teach Ice Beam over Rock Slide

Rocket: X Acc, Drill x2, Thrash

Gio: X Acc, Drill, X Speed, Drill, IB, Drill

Get Candy, TM26

At Safari Zone, Swap slot 5 with X Attacks, Teach EQ over Thrash, get carbos

Fight Koga

Go to mansion

In Pallet town, use repel, swap X Specials to slot 6, teach surf+strength, use 3 rare candies

Get mansion carbos 

Fight Blaine

Elixir on bike menu to sabrina

Fight Sabrina

Fight Erika (IB all)

IB Rhyhorn

X Atk, EQ x3 Blackbelt

Viridian Rival: X Spec, IB, IB, TB, EQ x3

Use 2 carbos sometime before champ

Agatha: X Speed, EQ, IB x2, EQ

Lance, X Spec, TB, X Atk, IB

Champ: X Spec, IB, EQ, X Acc, Drill, EQ, Drill, EQ