Why using cold and not viral ? because when you do a statut you get 15% of atck speed and 100% of poison, so you do viral AND cold in your first hit (condition overload power)
you can switch gladiator might to :
primed reach
smite of grineer/corrupted/infected (not corpus xD) ...
[Primed Pressure Point]
a riven
[Primed Fury] for more status proc
and [Primed Fever Strike]

and I think its all, [Sacrificial Steel] is not a good idea I think, maybe [Healing Return] if you want but so you should using [Nikana] with [Daikyu]