I can’t answer your question, so apologies in advance for not doing so, but here’s two thoughts from someone who’s advice you should take with a grain of salt (me).
1). My dad tore his meniscus and had surgery on it once, and for a reason I’m not completely sure of, had surgery on the same knee a couple years later. He doesn’t lift or live a healthy lifestyle, so you have that on him, but he’s continued to work the same manual labor job (as you would continue lifting) and his knees kill him daily. He’s always in pain. Not to sound all doom and gloom, as @T3hPwnisher has torn…I think the ACL? and has come back even stronger and as far as I know, doesn’t really have knee issues.
So my main point there is how you go about your recovery will probably be the biggest factor in how your future ends up.
2). I would watch this:
You might not. I really really really don’t think you should let that get you down though. Squatting and deadlifting are awesome, and I hope I am able to do them forever, but some people can’t. Some people just don’t have the structure for it, or at some point the damage their body has incurred has made it simply unworthy of the relatively low reward of squatting 315lbs.
I’m almost positive you’d be able to do RDL’s. Using 315lbs for 4x10-12 on an RDL would no doubt get you strong in your hams/glutes/back/grip and you’d probably see slightly more muscle gain than with a standard DL.
Maybe you couldn’t back squat, but there’s front squats, box squats, belt squats, sissy squats, goblet squats, leg presses, hack squats, leg extensions, backwards sled dragging, trap bar deadlifts, walking lunges, reverse lunges, split squats, rear-foot-elevated split squats, etc…not saying any or all of those would be fine on your knee (some could be just as bad as a back squat, or worse), but my point is is that there are a ton of movements out there that all still allow for you to get strong as hell.
I’ve recently had to change my mindset about benching - I just never felt like it worked for me, and I didn’t enjoy it. Since I’m not a powerlifter though, there’s absolutely no need for me to do it, so I’ve been experimenting with other things, like board presses, floor presses, DB bench, incline, close-grip, etc. That’s the point - sometimes you gotta go outside the box.
I’m only saying all of this because as far as I know, no frequent poster on here has mentioned having 3 ACL surgeries, so I didn’t know if anyone would have anything helpful to say. The guy I tagged earlier might have some advice, but I think most people will tell you that this is not something internet strangers can answer for you.
Anyway, best of luck to you. Start a training log on here as you document your recovery - you’ll get a lot of support.