Help with my team please

[Jericho]

Hello, I'm new to competitive battling, so I would like to know A few things 

1. How many pokemon can have hold items?
2. How's my team look?
3. How can I make it better?

Here is A detailed overview

Swampert: Ability - Torrent, Nature - Relaxed, Ev's - 250 HP, 16 Atk, 252 Def
Scald, Ice Punch, Thunder Bolt, Earthquake 

Scizor: Ability - Technician, Nature - Relaxed, Ev's - 252 Atk, 4 Def, 252 Speed
Swords Dance, Bullet Punch, Bug Bite, Superpower

Togekiss: Ability - Serene Grace, Nature - Timid, Ev's - 252 HP, 80 Def, 176 Speed
Silver Wind, Nasty Plot, Air Slash, Thunder Wave

Espeon: Ability - Magic Bounce, Nature - Timid, Ev's - 4 HP, 252 SP Atk, 252 Speed
Psychic, Dazzling Gleam, Trick, Shadow Ball 
or
Substitute, Calm Mind, Future Shock, Baton Pass

Lucario: Ability - Inner Focus, Nature - Jolly, Ev's - 252 Atk, 4 Def, 252 Speed
Psychic, Aura Sphere, Dak Pulse, Dragon Pulse

Gengar: Ability - Levitate, Nature - Timid, Ev's - 4 Hp, 252 SP Atk, 252 Speed, Hold Item - Life Orb
Shadow Ball, Hex, Sludge Bomb, Destiny Bond

There you have it. That's what I'm looking to bring to the table. 

What are your thoughts? Be gental, I put a lot of time and though into this.

No Tyranitar please. Yes I know he is amazing but everyone uses him. Also, I'm totally ok sacrificing power over technique. (Or however you say it)