Body Work Tutorial

Yes the filler work needs to come first. Thats the easy part. I did pretty good seeming them in so not worried there. Going to knock that out this weekend and go back and keep sanding the rest of the body. So is it ok to keep using the 50 grit then step to the 80? I have more 50 grit and I have 180 disc I can get some 80 grit.