I have a special sweeper salamence here:
I have dragon pulse for STAB, but is Draco Meteor better?
I would recommend Draco Meteor. Your set has "suicidal" in the description, meaning you don't expect it to last long. If that's the case, why not have a nuke you can use to potentially deal with one of your foes before going down? The Special Attack drop doesn't matter too much, as you'll either faint or switch out. Dragon Pulse works, but the lesser power can bring you short of a few KOs.
Hope I helped!