Recommendation for air purifiers for a recording studio (very low db, high cfm)

I run a mid-size recording studio with 4 rooms. I recently discovered I have a severe mold sensitivity and had to undergo mold remediation on my house. I'm pretty serious about air quality now and would like to install purifiers in the studio. I'd like to run them 24/7 and because its a studio they need to be very quiet, but move enough air. Through the mold community I was recommended Intellipure Compacts, but though these are very efficient, they have very low, CFM and after reading some articles like this, I became turned off from them. I bought an Air Oasis iAdaptAir2 Small for my home and I am happy with that but the larger units that would move enough CFM at low DB are very expensive ($1k+). What I do like about this company is that they share their CFM rates at all speed levels including low.

I've calculated the cubic feet of each of my rooms and the approximate CFM to get 4-6 ACH.

Room 1: 2797.5 cu ft, 185-280 CFM

Room 2: 2376 cu ft, 160-240 CFM

Room 3: 2009 cu ft, 135 - 200 CFM

Room 4: 1743 cu ft, 115 - 175 CFM

I could use some recommendations on purifiers that can move this amount of air on a low setting with a sound level ideally in the 20 or 30 dBs. I am aware of CR boxes like Luggables that use MERV filters, but I am concerned that these filters don't filter down small enough to filter mycotixins (as small as 0.1 microns) as compared to HEPA. An ideal budget would be ~500 per purifier or $2k total. Thanks!