What i think i am going to need done is ACL surgery.
I think you are rather getting ahead of yourself, and your imagination running away with you more than you think.
It sounds as if you haven't actually had your knee examined yet and a diagnosis of an ACL injury given to you. To say you have "messed up" your knee "somehow" doesn't exactly describe what happened or what the symptoms are now. You don't say whether there was a noise, swelling or whether the joint is unstable. Even if you do have an ACL injury, you don't know the extent of it, so I don't think you can assume that you will need surgery at all.
I say the above because I know someone who did suffer a partial tear of the ACL and someone else who suffered a full tear. Also, ACL injuries are far from being the only damage that can occur in the knee.