I have a similar project I’ve been working on. My area isn’t as large as yours, but I have it sealed up, using a window A/C unit that can provide heat also, and a 70 pint per day dehumidifier. I live next to a large body of water so the humidity is always high but I can control it in my room to with in a few points.
Now my room is 4’x16’ and is devided on the 8’ mark. One side flower and the other has mother’s and clones. I run 6” carbon venting and drawing air from my mother/clone side where the a/c is mounted. A/c is set for 70 which allows for a 8 degree increase in flower room with lights on. Works great! I reuse the water from dehumidifier. Hope this helps.
I do have a question,
how will you be runnng your electric?