Is there reason they aren't removing the extra c ribs?

I'm just wondering why the top rib instead, unless they have MRI or other tests that point them to the top rib instead....

Many do have the surgery and do fine, some famous ball players had it and are still playing .
But they do go thru bouts of other"injuries" and need time to recuperate from those..
Hank Blalock of the Texas rangers was one. he had TOS surgery and checking up on his stats you can see he has had many "other" injuries following him and he continues to play...or at least last year when i checked how he was doing on the rangers website.

I think the some of the main things we suggest is to make sure you get other opinions from independent & expert surgeons- not a friend or office partner.

Look at the both sides- pros & cons -the what if's
don't automatically think you will be 100%, be hopeful for it, but prepare for maybe less improvement.
Each case has so many variables - the causes of TOS, the surgeons, if your body happens to make excessive scar tissue...

I hope your parents will ask many questions of the surgeon about the procedure and recovery.
I hope they are reading up on all things TOS related, it's a lot for a teenager to absorb.