Good luck to you Katie, but RUN away from that car...it's simply NOT the one you want
! I like the advice you've been given in regards to an SC as likely being the 'most' cost effective way to go. Use the local Charlotte guys/gals to assist you (as you already have), and then let Eurowerks check it out before you make a committment. I love your enthusiasm towards our beloved 911s, and don't want a 'money pit' to ruin it for ya.
edited: ps: ...if you do make a mistake...it's not a big deal, you're young, we've all made them, and that will qualify you to offer sage advice (based upon experience) in the future here on this board