Re: Authentic shutters: Should I even try?
Bifold shutters are really hard on the joinery. The cantilevered weight makes the stress more than double. Unless you are doing a perfect restoration, I'd probably not do it. If you want to, have the shutters made from hardwood, like mahogany, with full mortise & tenon joints as they would have had originally. Pine wood and dowels really won't cut it. Make sure that the hinges are actually going into something solid. I would really question the viability of modern trim/jambs to hold actual shutters.
Hang he shutters in the proper place; originally they were hinged very near by the window sash, not on the outer edge of the trim. I'm irked to see shutters affixed with 4" of trim showing between them and the window.
Look to historical precedents for your example.
Remove not the ancient landmark, which your fathers have set.