For starters. I don't think you could go wrong with a Copper John Dead Nuts hunter sight. Most places have them for around $60. Built very solid and from what I hear, their customer service is second to none. (Luckily, I have never needed it.)

As far as rests go, I am a big fan of the trophy ridge drop zone. I don't shoot a Matthews, but don't see any reason why it would not work. I shot an Outback a few weeks ago and it had a NAP quicktune 4000 on it. I liked it as well. Let us know what you go with.