I agree with Arne.
If you bump up the bow weight, the 60-65# spines might not be heavy enough.
Your wood shafts with the heads you want to put on them will probably come in at 10-12 gpp.
Some folks put a death grip on the riser when they shoot. Those are the folks who feel more of a bow's hand shock, Hills included. Some are just more sensitive to hand shock than others.
A low stretch string and a light to moderate grip on a Hill will reduce felt hand shock. A 10-12 gpp arrow is right about in the middle and won't have an appreciable effect.