Sun Team: Please rate

I am playing Pokemon Black and just got a full 6 pokemon sun team, but I need it rated and if you see any improvements to make the team even better, feel free to speak your mind, I am looking for any suggestions that can make the sun team better.

Sun Team (X000) <- this doesnt mean anything, I guess a name Idk
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Ninetales
Item: Chesto Berry
Ability: Drought
EVs: 252Hp / 92 SDef / 164 Spd
Nature: Timid
Moves: Solarbeam, Flamethrower, Rest, Will-O-Wisp
Notes: Ninetales is what makes my sun team possible. She puts out a permanent sunlight (unless changed by weather) when she appears making her invaluble. I run a Timid nature with 252Hp and 92SDef evs to give her survivability and to allow her to throw off Will-O-Wisps. The remaining 164 evs I put in speed in conjunction with her Timid nature to allow her to outrun her threats. Chesto Berry is there to make Rest give 1 full health restore without a downside, giving Ninetales a extra life.

Venusaur
Item: Life Orb
Ability: Chlorophyll
EVs: 4Hp / 252 SAtk / 252 Spd
Nature: Modest
Moves: Growth, Sludge Bomb, Energy Ball, Hidden Power (Fire)
Notes: My main special sweeper, and sun abuser. Venusaur abuses the sun with its ability (Chlorophyll) which doubles his speed. Throw on a Growth and you have 2X Attack/Special Attack for each time used, increasing the offensive capabilities of Venusaur, making him a dangerous sweeper. Life Orb is added for extra power.

Infernape
Item: Life Orb
Ability: Blaze
EVs: 252 Atk / 4 SDef / 252 Spd
Nature: Jolly
Moves: Flare Blitz, Close Combat, Mach Punch, U-Turn
Notes: Infernape is yet another sweeper, this time instead of being a special sweeper, hes a physical sweeper. He gets rid of those threats that threaten sun teams like Tyranitar, and gets rid of Chansey/Blissey. Leftovers is there to recover some health lost from Flare Blitz, and Mach Punch for priority and gets STAB. U-Turn is there to deal with Psychics and to quickly get out of battle.

Sawsbuck
Item: Life Orb
Ability: Chlorophyll
EVs: 72 Hp / 252 Atk / 184 Spd
Nature: Adament
Moves: Horn Leech, Jump Kick, Megahorn, Aromatherapy
Notes: This guy allows for more physical power as well as some support. Aromatherapy is the support option, which is really helpful for getting rid of troublesome statuses on the team, it can also be used for more Ninetales free health recovery from Rest, since Aromatherapy will cure sleep. Megahorn is there for hitting the Lati twins.

Heatran
Item: Air Balloon
Ability: Flash Fire
EVs: 252 Hp / 4 Def / 252 SAtk
Nature: Modest
Moves: Fire Blast, Earth Power, Hidden Power (Ice), Dragon Pulse
Notes: Flash Fire Heatran is here for a purpose. Countering other fire types hoping to use your sun to their advantage, getting rid of dragons, and providing great resistances and immunities for the team. Air Balloon is there to keep ground type moves from annihilating him.

Forretress
Item: Leftovers
Ability: Sturdy
EVs: 248 Hp / 8 Def / 252 SDef
Nature: Sassy
Moves: Stealth Rock, Rapid Spin, Gyro Ball, Volt Switch
Notes: He is the #1 support member in the team, excluding Ninetales which provides sun. Forretress gives Rapid Spin support for the team, knocking out any entry hazards that may plague the team. He can also lay entry hazards down of his own by providing Stealth Rock support. Volt Switch is there to slowly but surely get Ninetales in to let loose the sun.

Added Notes: I know this team is NOT 100% perfect and probably needs work in some departments, thats why its here to be rated and to be given any suggestions for improvement. If you have any suggestions that can be given to make this team even better, please feel free to let me know, I am looking for any-way to make this team even more improved :)

Infernape should use a Life Orb rather than Lefties just so that its moves get amped up, particularly Flare Blitz.

Sawsbuck doesn't have enough bulk to use Aromatherapy effectively. It's more of a sweeper than a supporter because of its poor defenses. Blissey can provide Aromatherapy support while having the bulk to take hits:
-Aromatherapy
-Seismic Toss/Flamethrower
-Toxic
-Softboiled
Nature: Bold
EVs: 4 HP/252 Def/252 SDef
Item: Leftovers
Ability: Natural Cure

Donphan is an offensive spinner you can consider over Forretress (since the sun amplifies Forretress' Fire weakness):
-Stealth Rock
-Rapid Spin
-Earthquake
-Toxic/Roar/Knock Off
Nature: Impish
EVs: 252 HP/4 Atk/252 Def
Item: Leftovers
Ability: Sturdy

or
-Rapid Spin
-Earthquake
-Stone Edge/Head Smash/Fire Fang
-Ice Shard/Stealth Rock
Nature: Adamant
EVs: 252 HP/252 Atk/4 Def
Item: Leftovers
Ability: Sturdy

Magma Storm is too inaccurate on Heatran, even though trapping opponents seems tempting. Fire Blast is the better alternative. HP Ice and Dragon Pulse have redundant coverage together, so drop one and replace it with Taunt, Flame Charge, Substitute or Stealth Rock.

-PlatinumDude, thank you for the reply. I changed Infernapes item from Leftovers to Life Orb. Dolphin does seem like a good choice, but Forretress seems to do everything Dolphan can do and more. Although I understand your point of a 4X fire weakness and certainly a fire type move in the sun would OHKO it, unless of full health/sturdy. The main point of Forretress is to provide support and then leave. Your suggestion on Heatran has caught my attention, and I have replaced Magma Storm with Fire Blast. And you are right about the coverage part, I am still deciding on what to replace Dragon Pulse or HP Ice with, but you did give good suggestions. Thanks :)