Hey Ducky,
It's good to hear you have decided to get the LIS. I honestly think you won't regret it and you will get your life back :) Did you see a well experienced CRS yet? I know the last time we talked (I think),if I'm remembering correctly- you were going to use a general surgeon? Don't forget all the questions Ducky! No matter who you decide to let do your LIS. It's really important to find someone who is well experienced! :)
I needed the full two weeks to recover. I did have the skin tag removed also. You may be able to return to school sooner, but history has shown on here with most folks that recovery can vary and you also don't need to push yourself. Sacrificing a couple of weeks could give you a better shot at healing quicker. I think it's a good idea to stay off your butt while it's so swollen from the surgery. Any extra pressure can't help in my opinion.
Is it possible to get your work in advance so that you can work on it at home while recovering? That way you could lie down instead of setting up in class. You can also do your baths and keep up with the diet- which is really important while healing.
Good Luck!