Here is a pretty good set up:

http://www.cabelas.com/cabelas/en/te...&noImage=0

this set up is very easy to see through and should provide you will very quick, accurate shots out to at least 100 yards.

Although currently, I am experimenting with this sights front fiberoptic sight and on the rear I am using a williams peep. It is pretty close to feeling like you are looking through a scope. However, on the williams peep I have what is called a "twilight peep". Much bigger appeture than the peep it comes with and has a brass ring to increase its visibility in low light. As as stated already, if it is really dark, you can unscrew the peep and use the ghost ring.