Give this a try. We'll make a button that can deploy the current selection in a notebook:
Button["Deploy",
Print@CloudDeploy[
Notebook@Flatten@{NotebookRead@EvaluationNotebook[]},
Permissions -> "Public"]
]
You can tune that call however you like--I'm not gonna bother making the interface nice.
Then select some cells in your notebook, click the button, and only those cells will deploy.