My advise is hour build while at university.. but for goodness sake dont do a degree related to aircraft or aviation... Do something different togive yourself a real back-up plan!!!!!
I did mechanical engineering, (BEST YEARS OF MY LIFE)... Trust me go to university,esp now in the current climate... Your also v.young to be entertaining the idea of ATPL's without some sort of experience in some other field!!!
Anyone that doesnt agree must be mad in the head I reckon....!!!
All the best