I need help with patch panels

[1badcad]

Hi i have a couple of questions for the experts, i am a rookie here. I am going to get my truck cleaned up and repainted after my Fire accident. I noticed some small rust in some areas and other places i am not too sure off. Here are a couple of pics.




is this the part i need? If so how hard is this for the body shop to do? I dont even see where this would go into another part.


Here are my rocker panels. I bought some new ones on line.


what about my floors, should i get these done too?


i am just not sure about the rear back of the cab, those are the ones that do not look that hot, Any help would be great. Thanks.