90% finished carport conversion. Roll up sides or just fan?

10×15 Shelterlogic became my new greenhouse. Still planning to build a potting bench on the north side and add another set of shelves on the south. I’m really pleased with how the black paint makes it look a little more polished. Still not a gorgeous glass house but I like it.

I just order an auto vent opener for the window, so that should help on hot days.
I’m planning to add an electric heater for the early spring/night. I’ll fill the trough for a bit more thermal mass but idk if it’ll help much.

Not quite sure what to do with the sides, it feels stuffy in there to me so I like the idea of roll up sides for more airflow but I don’t want the whole thing to fly away either. I probably should stake it down either way but it’s on top of pea gravel with tarpping underneath and the more holes I make the more weeds I get come through, so I’d rather not. Roll up sides look like a pain to manage too.

Mostly excited to be able to use for an earlier start next spring to grow a bunch of food and flowers for our June wedding.

Any suggestions are welcome as this is my first greenhouse.