Which of the following moves works best on Choice Band Dragonite-Waterfall/Aqua Tail, EQ or Superpower?
Dragonite will probably want to distinguish itself from Salamence, so Superpower is a must; it also gives very good coverage with Dragon-type moves. You may also want Fire Punch to 2HKO Skarmory, so assuming you're running Extremespeed and Outrage, you have a set.
Is the red gyardados sufficient to find your SID in HG/SS? I've never caught a real shiny.
I don't think it is, it needs to be a randomly caught (not chained or stationary) shiny...sorry.
Modest Milotic@ Life Orb with
Surf/HP Electric/ Hypnosis or Ice Beam/ Recover
...
So...
A. Which spread do I go with in OU?
B. Would said moveset like Ice Beam or Hypnosis?
I'd say Ice Beam over Hypnosis, always...it's more reliable and isn't bound by sleep clause, as well as adding to Milotic's coverage. Of the sets...the first is designed specifically for UU I think, and so the given EVs won't be as effective in OU. The second...might work, but it seems a bit counterintuitive to use Life Orb on a defensive spread that lacks much SpA investment. The third is pretty interesting, but without a Life Orb it may lack the power to sweep. LO Starmie might do that better.
Maybe you could try Timid Milotic, with 24 HP 252 SpA 236 Spe and Life Orb, with Hydro Pump over Surf. The speed EVs allow it to outspeed Adamant Lucario - allowing it to function as a check, Impish Gliscor, Timid Heatran, Adamant Dragonite, Jolly Bulky Gyarados, and Standard Rotom-A - hopefully making it a lot more useful in OU.
I can't remember how many times you've posted that...