There's definitely an amount of risk that you will do additional damage to your knee. Without the stability of the ACL, your meniscus will be compensating and its not structurally built for that so you could damage it. Once that happens, you could start grinding cartilage. All of that can be repaired, but it may result in a more complex, expensive surgery with an even longer recovery timeline than just ACL repair. You grind your cartilage down, your doctor may want to install some from a cadaver.
Sidehilling and deadfall are going to be your enemies. Trekking poles are a must. And, your buddies "helping out" means you are carrying absolutely minimal weight. I'm not saying I wouldn't do it myself, but there's probably no conventional advice that is going to suggests that this is a good idea and that you won't end up paying an additional cost. You have to also consider the damage you are going to potentially do on the 50 days between now ands then.