Help with my team.

Hey, I am currently replaying pokemon emerald, and I need some advice for what to do with my team.

Current team:

Level 39 Blaziken

Blaze Kick
Peck
Double Kick
Ember
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Level 30 Aron

Iron Tail
Take Down
Metal Claw
Headbutt
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Level 30 Breloom

Mach Punch
Tackle
Headbutt
Mega Drain
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Level 24 Swablu

Growl
Astonish
Safeguard
Fury Attack
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I need help deciding what My next 2 pokemon will be. I have a Marill that I'm using for surf right now, but I don't know if I want it permanently. I was thinking maybe an Absol, but I don't know what my 6th pokemon would be. Thanks for helping, and hopefully I'll be able to decide.

Okay, and I still need 1 or 2 more pokemon suggestions.

You have 2 choices. I'll give you a chance to decide your 5th member, between Lanturn and Tentacruel. You need a surfer.
Tentacruel: This thing can tank alot of damage with it's bulk.
It's attacks are:
Surf
Sludge Bomb
Hydro Pump/Waterfall
Ice Beam.
The nature depends on you.
Lanturn: It can really help you alot. Great coverage.
Spark/Hydro Pump / Ice Beam
Thunder/Thunderbolt
Surf
Hydro Pump/ Ice Beam / Waterfall
The nature depends on you.
Don't know what pokemon for your 6th, but I'm sure someone will help you.

Thanks, I'll catch a tentacruel because I can find level 30+ ones swimming with marill, but marill is only lvl 13 :x I guess Absol will be my 6th pokemon, and that seems like a good enough team.

Oops, you don't have a Diver.
Tentacruel: This thing can tank alot of damage with it's bulk.
It's attacks are:
Surf
Sludge Bomb
Hydro Pump/Waterfall/Dive
Ice Beam.
The nature depends on you.
Lanturn: It can really help you alot. Great coverage.
Spark/Hydro Pump / Ice Beam
Thunder/Thunderbolt
Surf/Dive
Hydro Pump/ Ice Beam / Waterfall
The nature depends on you.
Since you get waterfall at the 8th gym, learn dive first, then after you finish defeating team aqua/magma underwater, and you think you don't need Dive anymore, remove Dive and replace it with waterfall.