You might think about a low power illuminated scope 1x close up and 4x for out as far as 350 400 yards. The Millet DMS is a cheap and very functional optic. It has a circle and dot.
This one sounds like a good fit for you unless your budget is bigger than mine.
http://swfa.com/Millett-1-4x24-DMS-S...bo-P42148.aspx