Battle wounds.....

I think if you have one valve bent THAT bad, there could be more that are slightly bent. You're at least taking the other head off, aren't you? 8)

As for other damage this may have caused, I think there's only one way to tell for sure... tear down the whole engine. You're planning a new cam anyway, so just pull the engine and put it on the stand. Tear it apart and inspect EVERYTHING. This may be overkill, but if that were my engine, that's what I would do. How many passes do you have on it??