Experienced builder...lots to learn about timber framing and sips. I am designing a hybrid and I want 2 or 3 of my TF floor joists to run through the sip panel so I can have a cantilever window seat in the upstairs bedroom. Should I A: drop the girder so the joists run over the top and out the wall. B: Leave the girder out and have pockets in the sip panel with some of the joists setting in pockets and some continuing through the panel.
After I have the timbers outside the sips what should I do? Will the sip companies send me the 5 small panels it would take to enclose the small popout and then stick frame a roof for it? The house will be in interior Alaska so I would like to make the envelope as tight as possible. Any info would be greatly appreciated

Scott Dillard