Emerald Squad

[Charizard_Man]

Building a solid Pokemon team is usually simple for me, but for my Emerald version that's not the case. I can't seem to find a solid team to get myself through the game. My team right now I guess is decent but I kind of want a combonation of Pokemon that work well. But anyways I just got the 7th badge and here's my team right now, tell me whether I should change some pokemon, change some attacks, change some items, and just leave everything the way it is:

Blaziken Lv44
Item: Charcoal
-Secret Power
-Fire Blast
-Overheat
-Blaze Kick

Aggron Lv42
Item: Hard Stone
-Take Down
-Rock Smash
-Iron Tail
-Strength

Manectric Lv40
Item: Soothe Bell
-Thunderbolt
-Thunder
-Bite
-Flash

Vibrava Lv40
Item: Soft Sand
-Hyper Beam
-Dragonbreath
-Fly
-Dig

Wailord Lv40
Item: Mystic Water
-Blizzard
-Dive
-Surf
-Water Pulse

Tropius Lv37
Item: None
-Cut
-Razor Leaf
-Body Slam
-Mystical Leaf