A cop doesn't have to prove reckless driving, it's a judgement call on his part.

Fines and such will be up to the judge and how you present yourself to the judge will determine his attitude towards you. If you're defensive and act like a victim, he'll burn you down - suspension, fine, etc. If you're contrite and take your beating like a man, he'll probably let you off easy.

And yes, if there's a deferral option, take it, but don't screw up if you do. The courts don't look kindly on repeat offenders.