I don't think it's too soon. Everyone has to start somewhere. Of course they will put you in the ring only with another noob, so it's not like you're absolutely not gonna have a fair chance.

I think if you're in fairly good physical shape and can last a few rounds without being too out of breath, and have reasonasble form and skill, you should do okay.

Post back here after the fight and let us know all the details of what happened! I'm interested to find out, as I hope to have my first fight in the next few months.