Bleach bath

I've been fading my colour from pink & purple back to blonde as I want to go blue. I had used a blue based purple so was a little hard to remove as after it went blue, it went green! Anyway, last night I done my 3rd & final bleach powder & shampoo on the green parts which took all of the green out!  *1*
Now I'm left with this base kind of orangey blonde on one side & lighter more pale blond on the other, I was thinking about waiting a month to do a bleach bath to lighten it up some more & make it a little more even, as I bleached my roots about a week ago & then sorted the green bits out last night. I'm planning on using diluted Directions Atlantic blue to achieve a similar colour to the picture attached, do you think 1 BB will make it light enough? I mean my hair is pretty light now, it's just still a little more on the yellow then I would like, toning with a diluted dye has helped, but not as much as I'd of liked.