reply to doechsli
Re: Spray Foam or Batts We have a timber framed house with stressed skin panels for roof and walls. You are correct with foam fishing cables through the wall can be a challenge. The advantage is solid insulation is much better insulation and moisture control then fiberglass batts.
If you concerned about later access have you though about using fiberglass in the stud cavity and solid foam panels on the inside between the studs and drywall? That accomplishes several things it moves to dew point to the foam rather then fiberglass and minimizes moisture infiltration to the stud cavity.