Not the first time and it won't be the last.
If you have crawlspaces to add to your climate control contraptions, those can be used for exhaust if you don't want to mess around with punching a hole in your roof or chimney. You can also build a little door and make a space to keep ballasts so the heat is not adding to the heat load inside.
In summer, exhaust to outdoors. In winter, I personally exhaust to indoors (right into my bedroom, lol!!! smells SOOOO nice) to keep your heating costs down.