My son competes in the YHEC and I'm looking to upgrade the sights on is traditions deer hunter. It has a 15/16" octagonal barrell. It's drilled and tapped for scope mount but he can only use open sights. I would like to get him an adjustable peep sight like the Williams flights with knobs for adjustment. Would also like a globe sight for the front but there is no dovetail just one screw hole. Any recommendations?