Mike is right. I forgot Training budget. That seems to be very important. Maybe more than coaching in that you're probably not going to be between a HiA H Coach with a rating of 80 and a rating of 20. More likely it will be between a 55 and a 50.
Health probably belongs on the list. The higher the budget, the better they bounce back from an injury. You'll play your best prospects a lot to max their development, so they are more likely to get hurt. Health is an insurance policy.