Hi,
If you are getting orangey tones then it's not lifted enough. If you want a level 10 with ashy tones, you would need to be lifted to the palest yellow, then tone with ash/violet.
If your hair is difficult to lift, it may need lifted twice, but if you are not a professional this would probably not be a good idea. In fact, you should probably be seeing a professional anyway (sorry I'm assuming you are not) for that amount of lift.
Lifting that amount I always go low and slow - my go to is Schwarzkopf Blondeme with 20 vol and always with Olaplex.
Hope this helps