I can understand why your excited, especially it all being new and the certain freedom that comes from poly. But I would not ignore the "cynics" in the room because there is a lot of experience in this forum and they speak from a place of wisdom. I'm new here and I can definitely see that.
Polyamory is something you jump into with your eyes wide open, triple thinking everything through before you agree to it. You need to go by more than good vibes, love and "let's try it". You need to extract your emotions and be able to use your head too.
Don't fight against the existing model, create a new model that makes the old model obsolete.