I do hope you have researched and found a expert surgeon for your operation.
This is Not a time for a rookie dr or one that is in a hurry to cut

Have you had expert PT for the symptoms ??
I wish we had more time to hear more about your symptoms and what you have tried already...

You can put the surgery off if you aren't 100% sure right now and do more research , please don't rush into anything that is not critically urgent.

Things I am wondering about-

what is your main pain & symptoms?
what is your avg pain level?
Do you have severe swelling or blood flow issues?
Can/did the Drs show you on MRI or other tests what exactly the problems are?
How long have you had symptoms?

We do have a thread on Hank Blalock the Texas ranger ballplayer that had TOS surgery - but he has expert docs and PT I'm sure - but if you read the sites about him he is still on/off the active roster due to various ongoing injuries...
here it is-
http://neurotalk.psychcentral.com/thread26882.html

I'm just saying you are young and unless there is a critical reason to have this surgery right now , blood clot issues, continuous & extreme nerve pain etc. - why not wait a bit??

Once these parts are removed you can't put them back...