First thing I'm wondering is, are you running EV's?
Scald > Surf on Bulky Milotic, as it enjoys burning Physical Sweepers. Toxic has more utility than Mirror Coat, however, Mirror Coat still has its uses in SCRMT, so it depends really on what you need more. Light Screen is relatively useless outside of being used on Dual Screeeners, run Ice Beam. Finally, Recover > Rest.
I'm feelin' electric tonight
Cruising down the coast goin' 'bout 99
Got my bad baby by my heavenly side
I know if I go, I'll die happy tonight