If I can't figure out something with what I have then I may just have to part with the sats for one of these.
Take off the fans and throw in one of these
AC Infinity CLOUDLINE S6, Quiet 6” Inline Duct Fan with Speed Controller, EC Motor - Ventilation Exhaust Fan for Heating Cooling Booster, Grow Tents, Hydroponics https://a.co/d/9gAfnOs
If I can't figure out something with what I have then I may just have to part with the sats for one of these.
Good luck and keep us updated on the build