Any compound will work good with or without sights. Most of today's bows are much shorter than what you're used to, so that could be a problem for you. At your draw length, you really need to stayover 40" axle to axle or it's likelyyou'll have to change from a 3-finger release to a 2-finger release. Try to avoid the high letoff bows and go with 65% letoff.

Martin makes three bows that I'd suggest taking a peek at. The Cougar Elite, RazorX Elite and the Shadowcat Elite, all 40" or over with Nitrous cams.

Also, I seriously doubt the 400 spine range arrows will be stiff enough for you. Especially with modern cams and fingers release. I'd go to 340's.