Rate my team please?!

So I'm playing on leaf green and I have already beaten the elite 4, completed the sevii islands quest, and captured all of the legendary pokemon. Now I'm trying to train up a good team for a secobd crack at the elite 4. Here is my current team.

Charizard lv. 57
Fly
Slash (weak I know)
Flamethrower

Sorry, here are the rest. Charizard also knows blast burn.

Lapras lv. 55
Hydro pump
Surf
Sheer cold
Ice beam

Hitmonlee lv. 54
Double edge
Mega kick
Brick break
Strength

Raichou lv. 53
Thunderbolt
Thunder
Rain dance
Thunder wave

Graveler lv. 53
Earthquake
Explosion
Rock slide
Strength

Mewtwo lv. 70 (i just caught him)
Swift
Safeguard
Recover
Psychic


I know graveler is a weak pokemon, and i dont really like having a legendary on my team. Any suggestions on other pokemon i could use or different move sets i can use? Any help would be appreciated.

Moved to the In-Game Team Rating forum :)