Here’s the sad part - previous owner was an older gentlemen and Carfax showed a cabin air filter replacement and, then less than 10k miles later, an AC Compressor replace and AC recharge. Almost certain this poor guy was chasing the fogging issue after a botched air cabin filter replacement.
The saddest part is that’s what the shop concluded was the best course of action.
Glad you are headed toward a solution though.. and congrats on the rig.