Hi everyone,
I need some advise on the order in which to do my rust repair on my Clubman (See Photo Below)

I need to replace most of the floor pan as it is all dented up (Red Area) I have a full replacement panel including the inner sill. As you can see in the photo the door step (Pink Area) needs to be replaced and then I have the complete outer sill panel to replace.
The problem I have is deciding on which panel to replace first or should I just brace it all up and then cut the lot out.
Any help would be much appreciated.