Hi there, it's been a while since I visited this thread. I managed to score a 447 Super Triples Streak with a sun team:
Charizard @ Charizardite Y
Ability: Blaze (Drought)
EVs: 4 Def, 252 SAtk, 252 Spd
Timid Nature
-Heat wave
-Air Slash
-Solar Beam
-Protect
Mega of the team and brings the sun...