Blightcaller/Spellshot spell dot build. Is it viable?

I have this build on my mind, it would be using two spells for applying dots exclusively, no guns or very little (similar to Spellshot/Graveborn full caster). I understand that Blight/Stabbo is better for dots and that Spellshot is for spell damage and not status effects but I don't need another character that can oneshot raid bosses. I am intrigued by the unique playstyle, I just want to know if it can clear chaos 100 boss runs. Did anybody try it?