CMR,
Once the head is on the adapter you'll never know the difference, at least I can't tell any. Just use a good strong adapter.
Some shooters feel they get easier alignment with long adapters, I personally have better luck with shorter ones, it gives me more leeway for adjustments so I can achieve perfect spin.
If you ever run into some of the old Easton glue in insert type adapters, they fit a Grizzly like skin...simply perfection. They never made any in carbon sizes, but they still pop up from time to time in older aluminum sizes.