The (current) options

I have already had a mini phone interview for a place in Greenville, SC. I will be flying down in a few weeks for an "on-site interview." I have another phone interview lined up for a company in Charlotte, NC. I need to continue researching these two companies and areas, as well as looking up other opportunities. I am excited about seeing these places and meeting new people. Nerves are starting to set in regarding making a final decision- or should I say "my first decision?"