It's a good idea.8" wraps that I have been using weigh 12 grs.X amount of weight on the rear of the arrow will affect things more than the same amount on the front,at least in theory.I like them though to help me find arrows and they take fletch glue well.I try to not start tuning until I have everything on the bow and arrow as I would when hunting.
If you wanted to start tuning without them,you could but just know that you may have to bump up the point weight a little after you apply the wraps.