Even though the sentence looks fine, in order to make it more correct you should avoid using a subordinate clause as predicate nominative.
So, instead of saying The climax of the event was when we ordered pizza, it may be better to say The climax of the event was ordering pizza.
B. Integrity
You’re welcome ;)
I believe it is the second choice
Focus on looking back over your arguments frequently. Keep yourself on track for the point that you're trying to create by staying both true and relevant to the topic at hand. Also, provide good support for your argument. Avoid making assumptions. Lastly, compare your argument to the list of all fallacies. Does your piece fall under any of those at any time? If so, you then know what to fix. Hope this helps.