What kind of work are you doing on the electrical? Having the studs exposed is a great opportunity to redo to modern standards. A friend in Ohio has an old Victorian 3 story mansion, It also has an open beam attic that should probably become a finished room some day.
Having grown up in a very old farm house, I would probably consider finding as much fireproofing methods as possible to include in the construction. Maybe even sprinklers.
What a pleasure watching this project come to fruition.
The more I do, the less I accomplish.