Everyone will tell you that the anticipation is the hardest part of PCa - we always assume the worst and when we find out what exactly we are dealing with then we can start planning - but being 'in limbo' is tough!
Obviously you have prostate cancer - the lymph node involvement isn't ideal but they remove several lymph nodes during the surgery anyway. If, that is, surgery is an available option.
The alternative would be an immediate start of hormone therapy and radiotherapy sessions. If that is the recommended treatment then it should not impact you too much on your work as you can normally schedule your RT treatments to fit in with your work schedule.
If surgery is offered then it will typically be 2-3 months of medical leave post surgery - how quickly that will happen depends on your chosen hospital but my experience in CA/NV/AZ is that it can be pretty quick when the holiday season is out of the way.
Wishing you all the best!