There are great guidelines for co-sleeping on Dr. Sear's website. It is actually very safe and great for breastfeeding. The baby doesn't quite wake up to the yelling state that he would if in a crib in another room and you can just plop the nipple in and he will usually go right back to sleep. It is great for getting more sleep.
Just a few . . no soft bedding, no waterbeds, pillows, heavy blankets. Don't put the baby between you and a wall. NO alcohol or illegal drugs (duh)
I slept with all 4 of mine. They are 21, 19, and 14 and all sleep in their own beds and it wasn't hard to transition them. My toddler sleeps with his mommy and daddy.
He is talking about a big boy bed now and probably will transition sometime this summer but my husband and I agree WE WILL MISS HIM.
Regarding the breastfeeding, you are only taking 4 days off from the time your induction is planned until classes start. That is going to be very hard to establish a good milk supply without pumping. I concur with others advice about the Medula Pump In Style . . it was a great and easy pump and very fast.
I feel for you going back to school so soon. Good luck.