Pretty much personal choice on sights. For indoor shooting there is nothing wrong with a red dot optic. I've tried them and tend to like scopes much better, like I said personal choice. A inexpensive 3-9X40 I think is a little more practical, 3 power for close in and 9 power for longer shots.
Nothing wrong with any of the suggestions given, but I am definitely a scope person, there are some nice 1-4, & 1-7 scopes out there.
Just a suggestion.
Jim
