I have a new client tonight and I'm having a mental block! Just want someone to double check what I think I should do. She has about 80% grey roots about 4 inches of root. The mid lengths and ends are very light blonde (looks to be a highlift tint of some kind). I was thinking of doing lots of foils of Affinage 9.23 and 12.23 to match the blonde in her hair. And then between the foils doing something around an 8 to give it some depth? Does that sound ok to everyone?