60 gal compressor garage piping size.

[ChevyRacefan]

Sick of the having to remove hose connectors and blow out rust every year (black iron 1")
Thinking of re doing it in copper.
Should it be 1/2"/ 3/4" or 1" pipe.
hobby shop not a production garage. but do use, blasters, paint guns, da's, and drills,hammers, sanders,etc.
Don't know if the smaller pipe will cause problems.
My gut says, bite the bullet and go with 1" .
What says you?