not sure how the sarcasm could've possibly been missed
fine i'll write a semi-serious response:
The cast wont save you - the extra protection wont save you - meditation and prayer wont save you. Falling on a broken arm is not fun. If you do go, are you going to be protecting your arm, or will you be snowboarding? Trying to do both will just ruin the fun of snowboarding. (Personal Opinion)
Also, if you do go, i hope you have a high pain tolerance. Every little thing you do will hurt - tying boot laces, scratching your ass, adjusting your goggles. (Personal Experience)
It takes a special and mostly fucked up person to go into a situation where you know you are doing permanent damage to your body but do it anyways. I fall into that category (Personal Problem).
Your chances of being there in 3 months are up to you. My first post was the fun way around typing this shitty response