@3mustskiteer When I tore my ACL 5 years ago, one option my Doctor gave me was to ski in a knee brace to see if I could "adapt" to life with no ACL in my right knee (front leg).
My knee was quite sloppy, so I declined on that option. Instead, I did about 6 weeks of "pre-hab" to strengthen my leg with much the same exercises I would do post surgery.
I had the ACL hamstring graft surgery mid-October. Starting the following April I got back in the course wearing a DonJoy Defiance knee brace as a precaution. And, since I could hardly tell I was wearing it while skiing, I skied with the brace until early September.
Then, put it away for good. I believe the CTI brace is fairly similar, or at least the one I looked at 5 years ago.
I also had MCL strain, or partial tear, but it was largely healed by the time I had the ACL surgery, 2 months post injury.
I had no intention of skiing before my ACL surgery. Especially after reading in a thread on here, "you don't need your ACL to ski, you need your ACL if you crash". The ACL is the strongest of the 4 major knee ligaments; the other 3 would be at great risk should you crash with no ACL. Food for thought. You might be wiser to focus on pre-surgery rehab. Come back strong next spring.