Bleach powder to creme peroxide quantities.

Hi, can anyone help me work out the quantity of creme peroxide (9% 30 volume) to one sachet of Blondor Multi Blonde bleach (30g) please?
I tried a bleach bath three months ago using 6% volume creme peroxide and Blondor Soft Blonde oil mixed bleach, hair was well covered with coconut oil overnight but I was slightly disappointed with the result.

Also, has anyone any used Sally's new 'Color Me' two step hair strengthening system? I think it works on a similar principe to Olaplex?

I'm ready to do a fresh full bleach but cannot figure out liquid quantities to dry powder.

My aim is to return to my natural pure white hair and I'm at a real pallet of colours from two inch pure white roots/virgin hair, through pale yellow, ginger to light chestnut ends. Dye colour has been stripped as much as it can using Pro-Voke then lots of TLC. I'm happy to take a couple of years to get back to pure white.