Well, no harm in back-up gear. Better to have it than want it as they say in Ireland!
But letting peeps know of your passage plan & ETA etc. is recommended also. Those can be difficult waters. Radar is at times a good AID to navigation and therefore is always worth considering once you remember its limitations and rely on a range
of navigational aids (one of the best being yourself!)
Bon Voyage & would love to read about your successful trip!