How would you move forward?

I’ve been working on this greenhouse and I’m looking for advice on how to move forward. I know I will be using polycarbonate panelling for the siding, but I’m thinking I only want that at the top and the bottom 2 ft of the greenhouse have some panelling or wooden siding. I’m not sure how I’m going to vent or heat it so also open to idea there’s. There are 2 doors on either side and I am in zone 6a. Thanks