yeah range should be as wide as possible and as flat as possible
the elements size should be picked acording to your room size
you can take a 8.5` on a very small room
for that you have 5 and 6.5 near field monitors
hope i helped
and one other thing,the most importent is that you like how they sound or alse whats the point in music
you can pick up a nice active pair for around 400-800 $ new