It looks good like it is Bruce, don't see any reason to media blast it now.
Just take your DA with 150 to 180 grit paper and go over it, ensure you don't get the metal hot and warp it. My preference would be to do your body work, then block sand it with the same grit paper instead using the DA. When you block sand it each and everytime yousand it, it makes it laser straight.
You should sand it with a long board by hand at some time in the process. Try to get the bumpers and trim off now.
