All right so I'm currently trying to make a Spec. Tank Gogoat, mostly because I love the fuck out of Skiddo. I'm pretty new to actually battling people so I was hoping you guys could help me out on the build; I've got perfect IVs and 252 HP / 252 SpDef / 4 Def EVs.

Can't decide on the moveset though. I'm currently trying to decide between

Leech Seed
Horn Leech
Milk Drink
Earthquake
and Bulk Up

Which one should I cut? Any other ideas?