An AAoA of 10-11 is still excellent and I doubt that will drastically reduce your score. I do think the inquiries and 5 new account flags will ding your score significantly. I am thinking potentially 40 points (down to 750ish FICO). That said I expect half of that to come back in 6 months and 80% to return after a year. I could be way wrong but that is my WAG.