Wasp:
Welcome to the Forum and congratulations on your decision to acquire what I consider to be the finest pocket pistol yet designed and produced!
I would go with the sights. They are just large enough for functional use, even with my aging eyes. My R9 No. 132 has been my "always gun" for the past four years and has yet to malfunction. Of course, it gets a lot of "TLC," but it provides a great deal of comfort.