I was looking at the numbers for today (because I was curious about the U of A which has gone fully remote for course and exam delivery). There's a model in here https://medium.com/@tomaspueyo/coronavirus-act-today-or-peop... that you can plug numbers into. I would say work from home though, you'll feel absolutely devastated if one of your employees falls ill and you were the cause. Trust them to do their work remotely and they will reward that trust.