Got anything in mind? The problem is... Milotic is one of the best bulky waters, but Jellicent is preferred simply because it can be a spinblocker and a bulky water, though its stats are largely inferior...
For Walls, I like Chansey/Blissey, Skarmory, Hippowdon, Nattorei etc. I think I'd like running all three entry hazards with priority going to Spikes and Stealth Rock. With Milotic acting as phazer and bulky water I'll need
a Spiker- Skarmory, Roserade, or Ferrothorn
a Special Wall- Blissey, Chansey.
a Stealth Rocker- Blissey, Hippowdon, or Ferrothorn
a Spin Blocker- the only one that I think could work well is Chandelure, but I really like Spiritomb as well.
a Rapid Spinner- Hitmontop? Excadrill?
a trick absorber/backup sweeper? I think Reuniclus is as good as any, but Tyranitar or Latios seem good, too!