I am newly diagnosed and choosing my path. So far, I am in watch and wait. I have had several office visits and settled, for now, on who my surgical team will be if and when I have surgery. The two are a team, they collaborate on ALL of these surgeries. One is a neuro-oto, the other is a neurosurgeon who specializes in skull base tumors.
Only your husband can decide what is right for him. But, since you asked, I'll give you my two cents. First, I would not be in any hurry to get treatment unless his tumor is so critical that something must be done now. Work is not a good enough reason to get surgery. For one thing, it could very well take more than three months to recover. Second, his symptoms may never be better than they are now. Third, it takes time to be comfortable with a treatment plan. Your husband may be comfortable, you certainly aren't.
I would look into other solutions besides rushing into treatment. The Americans with Disabilities Act MAY protect him. I don't know if AN's qualify under that act, but if they do, his job MUST make "reasonable accommodations" including allowing him time off for relief of symptoms. His employer may not be aware of just how much compassion is afforded under the ADA law. I would explore the ADA to see if it gives you guys some breathing room.