@MYOS1634 I liked everything right up until you said “Freshman year is to explore and discover new fields”. I’ve found that not to be true. Those days are past.
The OP has lofty goals as majors and will have almost no time for resets. A comprehensive 4 year plan is the only way to go IMHO. Always plan for 15 hours each semester so you can drop the odd mistake class, but I think you really should gave all 8 semesters planned out before orientation.