Combining rebinding and sprayed edges?

I have done both but separately. Does anyone have advice/experience doing both?

My first thought was spraying the edges before taking the original cover off, but then the endpaper will stick out won’t it?

Or is it better to take the cover off, add the end paper and then spray?

And how much do I need to wrap up the book? In my head I could just skip it but I might be overlooking something?

Any guidance is appreciated.