It's pretty decent as far as training plans go, but given that this is several months out from the fall, you need a plan that's designed for being several months long instead of right before your peak race. For now you should just do some easy miles, starting at 5 days a week and moving up to 6 or 7 days a week, and gradually move up to 40-50 miles a week by June. By then your coach will probably have some kind of plan for you, if not just keep slowly adding more miles per week. Every 4th week can be a "down" week of less mileage if that helps keep your legs fresh. A few days a week you can also do some short strides across some grass or dirt to work in some easy speed work. And if you have the opportunity to run hills, they help a lot.