Whats wrong with "明天很早我要上班"?

我明天要很早上班。should also work IMO.

I deliberated between two word orders.

我明天很早要上班

And

我明天要上班很早。

The first is accepted, the latter is not. I understand that time comes early in the sentence but I was thinking of it as 我明天要上班 得 很早

Just wanting to check whether the second sentence is bad Chinese, not the same meaning, or just wrong?

Thanks!