Extra clamp is not needed unless you mean you will be fletching in different orientations (R helical, L helical, straight, etc)

As for glue- Any of the good instant glues will work for most vanes-I liked the Pine Ridge and Goat tuff, and Arizon EZ gel. I like to use standard fletch tite/FT platinum with bohning blazer vanes or real feathers- takes longer but bonds better with those.

I bought one of those fletch scrapers around 15 years ago and used it two times- junk. I reccomend a stout blade that isn't too sharp to get off most of the vane and glue, then use very fine steel wool or *very* fine grit sandpaper to finish it off.

Clean/wipe down with Isopropyl 91% alcohol (make sure it's 91%)

Paper towel soaked in the alcohol is good for wiping along the base of the shaft if there is too much excess glue squeezing out- and soak the towel good- otherwise you'll have paper towel stuck to your arrow if using an instant/super glue.

Bohning PowerBond works great for inserts- 5 min or 24hr epoxy is good too, but powerbond is much more convenient, MUCH less messy and works just as well.