What is the most logical next event?

How to dress for a job interview in summer
Ask the hiring manager about the dress code.
You will want to dress appropriately for the work culture of the company or organization with which you are interviewing. Call or email the hiring manager to confirm your interview and ask about the dress code.

Choices:
[1]. If you are working in a supervisor's office, you may want to start working out the dress code before you actually leave the office. Knowing the dress code before you leave your office can help you talk and apply your cv to a work environment you normally may be unfamiliar with.
[2]. You will probably also also want to think about how you will dress in august of the month. Get a photocopy of your resume.
[3]. The hiring manager should be able to tell you what your work attire should be. Also you will want to make sure that you are not intimidating the hiring manager.
[4]. Check with the norms in your industry, and if you are unsure, opt for something more conservative and neutral. Clean, mend and iron your clothes before your interview.
[4].