Where is a good training spot before the elite four in pokemon leaf green?

Question

i have the following pokemon and i need places for each one individually if possible, general ones are fine too:

Venasaur lv. 50

[vine whip, razor leaf, cut, strength]

Nidoqueen lv. 50

[surf, shock wave, bite, superpower]

Pidgeot lv. 50

[aerial ace, wing attack, gust, fly]

Snorlax lv. 50

[body slam, earthquake, rest, psychic]

Moltres lv. 50

[firespin, overheat, endure, flamethrower]

Zapdos lv. 50

[drill peck, thunder wave, agility, mind reader(or something non-offensive)]

Answer 1

By the Ember Spa on One Island, there are a lot of trainers with good pokemon. You could train them there. My pokemon went from 40 to 50lv. in one hour.

Answer 2

Train your Pokemon up in Victory Road (just before the Elite Four) because they have Pokemon on level 45 to level 55 in there so that would be a really good train up because your Pokemon are too strong to train in the POkemon Mansion or anywhere else for a matter of fact, so Victory Road will be the place for you.