Yes, you should be able to just copy and past the insert server behavior from one page to another and place it under the first insert server behavior and just make sure to remove the redirect from the first insert server behavior to the second.
I also noticed that you have applied Digital File Pro server behaviors, so just make sure that you copy that. And as long as all the includes files are there the server behavior should work. And it looks you are using the same trigger name, so that should be fine.
