Need advice on Coc Single Target Damage

Hey guys,
in the past few days I tried to build around a CoC MF character with the following gear:



The AoE damage on my CoC skill is enough to clear up to T15 Maps, but I just can't
find a way to get decent single target damage.
I tried nearly everything, Single Proj CoC, AoE CoC and even Vaal RF, but nothing
really statisfied me and did enough damage to even kill t11+ bosses quickly without having to refill flask several times in my hideout.
Maybe you guys might have something in mind that could boost my single target damage, otherwise
I guess I have to abandin this char, even thought it is tons of MF fun.

Whats your es? You should be able to one shot all non phase boss sub 16 with VRF. are you taking PA? Also how are you leaching after VRF goes off? I dont see warlords or LL gem. Not sure how you're using it. Also vaal disciplne boost DPS significantly.