I did the chest surgery, spring break, and back to class thing. It was a Real Man
TM thing to do... Which translates to a real stupid man.

If you can afford to skip the classes in the week following spring break, then accept that week will be a write off, and go for it. If you can't afford the extra week, then wait until summer. In the grand scheme of things a few months is nothing.
Talk with your profs if you really want to do it ASAP, and get the readings/assignments ahead of time. So before surgery you would have already done the work that your classmates would do when they get back to class, and you're hanging at home in a robe.
Shortman