I was thinking of having an Electric-type on this team, but I don't know much about which are good, so what are the options? Which would help out my current team?
The good Electric Pokemon are Wash Rotom, Thundurus and Zapdos. Experiment and see which one works for you:
Wash Rotom:
-Volt Switch
-Hydro Pump
-Will-o-Wisp
-Pain Split/Rest
Nature: Bold/Calm
EVs: 248 HP/216 Def/44 Spe (Bold) or 248 HP/216 SDef/44 Spe (Calm)
Item: Leftovers/Chesto Berry
or
-Volt Switch
-Hydro Pump
-Hidden Power (Ice)/Will-o-Wisp
-Trick
Nature: Modest/Timid
EVs: 4 Def/252 SAtk/252 Spe
Item: Choice Scarf
Thundurus:
-Thunderbolt
-Hidden Power (Ice)
-Psychic/Focus Blast
-Thunder Wave
Nature: Timid
EVs: 4 Def/252 SAtk/252 Spe
Item: Life Orb/Leftovers
Ability: Prankster
or
-Nasty Plot
-Thunderbolt
-Hidden Power (Flying/Ice)
-Substitute/Focus Blast/Psychic
Nature: Timid
EVs: 4 Def/252 SAtk/252 Spe
Item: Leftovers/Life Orb
Ability: Prankster
or
-Thunderbolt
-Knock Off
-Superpower/Thunder Wave
-Hidden Power (Ice)
Nature: Hasty/Naive
EVs: 76 Atk/180 SAtk/252 Spe
Item: Life Orb
Therian Thundurus:
-Nasty Plot
-Thunderbolt
-Hidden Power (Flying)
-Focus Blast
Nature: Timid
EVs: 4 Def/252 SAtk/252 Spe
Item: Leftovers/Lum Berry
or
-Agility
-Thunderbolt
-Hidden Power (Flying/Ice)
-Focus Blast/Psychic
Nature: Modest
EVs: 4 Def/252 SAtk/252 Spe
Item: Life Orb
or
-Nasty Plot
-Agility
-Thunderbolt
-Hidden Power (Ice/Flying)
Nature: Modest
EVs: 156 HP/252 SAtk/100 Spe
Item: Life Orb/Leftovers
Zapdos:
-Thunderbolt
-Defog
-Roost
-Heat Wave/Toxic/U-turn
Nature: Bold
EVs: 248 HP/168 Def/68 SAtk/20 Spe
Item: Leftovers