Shrooms: try this site
MOLD…If mold is tunneling inside the buds, not much you can do. Spores…The Vivosun fan (from @Kmac) is a 400+cfm, 6". and it comes with the charcoal filter AND a COVER for the filter. My area is hLF YOUR SIZE…8X4 AT 7’ TALL SO YOU MAY NEED 2 BUT THAT WOULD BE FOR air AND smell, nothing else. If odor is NOT the concern, just add circulating fans.
If you are EXHAUSTING out of the tent / room, I would not concern myself with mold spores unless your area has such HIGH humidity that you think it would be a problem. This is not BLACK mold coming from plants. If you filter the incoming air, that is a waste of the filter.
You will need to do a surface clean. I suggest a MOLD bomb and spray treatment / wash down of the area using bleach (kill mold). Do not mix ammonia in there, on the surfaces. If you are in a room, you could consider painting with RKill that addresses mold.