Try to keep up Envenom buff for as long as possible.
There's also an ability called Surge of Toxins(SoT) that Envenom gives you, it also increases DMG from KB and has shorter uptime than Envenom. Ideal situation after using KB is to keeping SoT and Envenom for the whole duration.
I was trying to do this last night but I kept running into energy issues. Any suggestion? I appreciate all your advice thus far!!