What is a flood to you? 4 grams of rootbark was almost too much for me to deal with. The ataxia and tracers alone were extremely disorientating and the visions open and closed eyes were profound, for at least 12 hours. The experience did not end for almost 2 days and aftereffects went for weeks, at least.
Just be aware, Mckenna suggested 4 grams and said that was enough for him, which is why I stuck to that dose. I see people suggesting 20 grams etc on the net, and feel it is excessive and dangerous to jump into that at home.
It goes very well with cannabis IME, if that is your thing. Dont smoke until you are comfortable and settled into the experience. During the peak most likely you wont want to move..and for myself the open eye visions were like real hallucinations happening around me. I did not expect that.
Magnesium supplements for days before may increase your sensitivty to ibogaine and help with beneficial effects via NMDA antagonism.
best of luck.
Long live the unwoke.