GB,firstly welcome on board and congratulations on your new swift vdi.
For your scratches, go to your local guarage and rubbing compound with some polish would definately take this scratch to minimul level, dont do the paint thing as of now, better you get going with your driving as these straches does keeps happening, may be later on you can plan for the paint job.
Taking your confidence its all within so dont get nervous specially hearing all those honks at your back,just be ease and enjoy your drive.Its all about the belief within and you have it already so just relax and enjoy your drive.