actually I am 32 years old and I weigh 128 lbs. I know it seems unbelievable,but its true.
Then sorry, but the recoil from the average high brass 12 gauge is going to be difficult for you. This is based on data complied from teaching hundreds of police officers personally and with others work into the thousands. The recoil pulse needs so much resistance and no matter how strong you are, the physics are what they are. Now if you were like 3 feet tall...
I wish you luck with it, have you a friend with an S12 that you can try? Perhaps the S20 is an option, I think that someone is now m