Take the pre-engineering class. It shows you have an interest and some colleges might question why you didn’t take it if it was available to you. You can also use it in your essay that you are taking a year to explore and research different engineering disciplines through this senior class.
Especially if you don’t have any other exposure to engineering. Some kids like my son did engineering programs in the summer then a yearlong Ace Mentoring program in his junior year that exposes students to different phases of engineering.