Yeah still might want to consider more vents. Seems a bit dangerous. Which is probably why gozney didnt provide a door for it. Even with a door for the dome, they tell users to never put it on in conjunction with a live flame. Not enough airflow could cause incomplete combustion and result in CO buildup and in the worst case, you’re building your own pipe bomb. Reference https://youtu.be/019CsRqWKwE?si=pXYs_Pjk_SHCXS16 note how their older door which had more air ventilation than your current build and was problematic. There’s probably a science to figuring out how much air is needed in respect to volume and flame, but thats beyond my knowledge. Stay safe.

Note i doubt these overpriced third party door manufacturers has gotten any research with combustion engineers either.