Hey /vp/

So I've been wanting to get into competitive this gen, and was wondering if I could get your input. I've tried making a team from favourites with as much balance/coverage as possible. Please let me know your thoughts, I'd appreciate it if you could help me out.

Galvantula
Timid/Modest (thinking Timid because he's my opener)
252 SpA/252 Spe/4 SpD
Item ???

Sticky Web
Volt Switch
Bug Buzz
Thunderbolt/Energy Ball. Not sure here.

Wigglytuff
Bold
252 Def/252 SpD/4 SpA
@ Leftovers

Protect (Not sure on this one, considering a different move)
Wish
Dazzling Gleam
Hyper Voice

Honchkrow
Adamant
252 Att/252 Spe/4 HP
@ Life Orb

Brave Bird
Sucker Punch
Roost/Foul Play (currently have Foul Play, considering Roost)
Superpower

Azumarill
Adamant
92 HP/252 Atk/164 Spe
@Leftovers (Should I not give it to Wigglytuff, although not sure what else to give him if I do)

Belly Drum
Aqua Jet
Aqua Tail
Superpower

Gengar
Timid
252 SpA/252 Spe/4 HP
@Gengarite

Destiny Bond
Taunt
Sludge Wave
Shadow Ball

NOTE: I was considering using Mega Banette, Mega Manetric and Mega Charizard Y but I figured they hindered rather than helped my team.

Last slot, ??? I was thinking Goodra with Assault Vest or Excadrill for Rapid Spin and sneaky pebbles.

Please help!