Mono Flying Team. Input?

[BlackRoseUmbra]

I figured since flying-type pokemon are commonly dual-typed, it might be fun to whip up a flying-type team. I tried to cover as many weaknesses as possible. Below are the pokemon, and their movesets(natures and EVs not included due to my being rather new to the concepts of stat-building with them).

Crobat
Lvl: 87
Poison Fang
Air Cutter
Steel Wing
Giga Drain

Xatu
Lvl: 88
Psychic
Aerial Ace
Shadow Ball
Steel Wing

Mantine
Lvl: 89
Surf
Aerial Ace
Earthquake
Ice Beam

Gligar
Lvl: 87
Earthquake
Aerial Ace
Toxic
Iron Tail

Togetic
Lvl: 89
Shadow Ball
Solarbeam
Water Pulse
Ancientpower

Skarmory
Lvl: 90
Steel Wing
Sky Attack
Rock Slide
Toxic

DISCLAIMER: I don't actually have this team, but I am working towards it.

That's all. Feedback please(I know Togetic's movepool is a little odd, by the way; that's the purpose for which it was submitted: improvement)?

 

[Emeraldfan]

What game is this for? I'll rate after I know that, since I then now what I can, and what I cannot suggest. From the looks of it, it seems like FireRed / LeafGreen.

 

[BlackRoseUmbra]

Yeah, it's FireRed/LeafGreen.

 

[Aura Sensei™]

Skarmory @Leftovers
Impish l Keen Eye
• Toxic
• Whirlwind
• Steel Wing
• Aerial Ace