I agree on the advice on applying for jobs you don't want first. If you're like a lot of people, you're nervous during interviews and practice makes perfect. Maybe you'll encounter questions you didn't expect or have a great answer for. Maybe you find out that people really do quiz you on all the textbook CS stuff you learned in college and subsequently forgot.
If you get a job offer out of it, that will build confidence for when you apply for the job you want.
If you get a job offer out of it, that will build confidence for when you apply for the job you want.