I am a bicurious man, and have a fantasy of being gang banged for my first homosexual experience. Thoughts?

I am a mostly straight, but bicurious man. I have some experience with anal play, but only with toys.I have a fantasy of getting fucked by ten to twelve other men while my girlfriend watches. I want them to cum in my mouth, in my ass, and all over my body. I would LOVE to have 2 people in my ass at the same time, even.Would that be too much for my first time? Should I mainly give people blowjobs and handjobs, or would it be ok for that many guys to have their way with me?Another question... how should I go about telling my girlfriend that I want this? She is super open minded, but this isn't something she would expect.