In honour of ORAS' imminent release, I'm going to replay Emerald one last time as my Grass monotype trainer, Forrest.

This time, however, I'd like some help with the team. In my first run, I had:
Sceptile
Leaf Blade
Dragon Claw
Pursuit
Quick Attack/Filler

Breloom
Spore (the suffering of level 50 Shroomish)
Focus Punch
Leech Seed
Mach Punch/Filler

Ludicolo
Surf
Giga Drain
Ice Beam (?)
Filler

Cacturne
Needle Arm
Faint Attack
Sandstorm
Double Team/Filler

Tropius
Fly
Sunny Day
Solarbeam
Synthesis

Cradily
AncientPower
Giga Drain (?)
Filler
Filler

Any tips on moves, or improvements? Perhaps a non spore related Breloom, if that's even possible? Anybody I should replace?

As a side note, have you ever done a themed run?