Question about ACL and Meniscus Tear?

I recently found out that I completely tore my ACL and partially tore my meniscus in my right knee after a sports accident last week. My doctor suggests that I start physical therapy right away, which I plan on doing, but about how long do I have to wait to get the surgery. I am at college right now and was wondering if I could possibly wait 2 1/2 months until december to get it done. Also, about long does it take to recover from this. I heard from as little as 2 months to 9 months but i am not sure which one is accurate.