And start over?" Why does the time line say my return should be accepted on 1/15? I believe I read returns arent being accepted from Federal until 1/27.

The IRS will not begin to accept e-files until January 27.  You will have to wait until then for the email that tells you if your return was accepted or rejected.  While your return is pending on the server, you must not try ot change anything on it, even if you discover you messed up somehow.  You have to wait.