Your way should be ok.Not exactly as I saw that after I had started setting up the phone. I used TWRP instead of ofox, but I flashed fw first then ROM and formated the data. Also, how to I know if I need LN8000 charging driver? Can't I use TWRP to flash this ROM? Edit: I can reflash with ofox if you want me to do it as I have not started to use the phone as daily phone yet.
Which fw you've taken?