I would also consider dual statistics mods in case you don't own them yet, also known as 60/60 mods. They're 60% elemental 60% status chance. They're generally good to have.
Such as: Rime rounds , High voltage, malignant force, Thermite rounds - Rifle
Frigid blast , Scattering inferno , Shell Shock , Toxic barrage - Shotgun
Frost Bite , Scorch , Jolt, Pistol Pestilence - Secondary Pistols
Vicious Frost, Volcanic edge, Voltaic Strike , Virulent Scourge - Melee.
Heat and cold mods are obtained from spy missions or can be bought for cheap.
Toxin drops from corrupted vor