I would pay a pro to do it for an additional 60-80 bucks depending who you use. There is a place here that does shotguns for about 180 the last time I checked. I've seen places as low as 160 on the net.
If you really want to go for it, check out the archery talk forum. Several guys over there have used the dip kits. I don't think you'll get the durability of a pro job.