Your list of EC’s are just fine. Depth is more important than quantity.
Since you are considering pre-med, will you complete your state’s EMT course and obtain your certification? For one, the no-nonsense rigor of the EMT course, and physiology section, will give you a good sense of what to expect for your years in college.
And, of course, having your EMT certification and being part of regular-scheduled crew will set you apart from other applicants.