Would doing 20mg for the first time at a show be fine?

My friends finally got some 2cb and I'm not sure where to start. I'm planning on doing it at a concert that has some really good 3D visuals. I'm experienced with mdma/acid (I've done both separately and have candy flipped about 10 times), more mdma experiences than acid. Would 20mg be enough to give me a good visual experience or should I try 25mg? I just want it to be the experience I'm looking for and not mild and underwhelming. I weigh ~200lbs if that matters.

Edit: Feel free to share your 2cb day rituals, do you smoke on it, fast the whole day, etc.

Update: Ended up doing 20mg, was for sure underwhelming as expected. But it was a good introductory dose and I feel comfortable trying out more.