Carba-tec is the place to go my man!
They've got Titebond (all versions), hot stuff CA glue, shellac, hide glue pellets, tons of luthier friendly tools including those violin maker planes, lots of guitar building books and more!
For the sandpaper look up those car places as mentioned, they've got all 3M products including those blue or green binding tapes, sandpaper, polishing pastes ect...