My plan is to install a custom ROM but I need to unlock the bootloader, however I cannot register at the chinese bootloader website so I'm going to use your handy all in one tool!
The instructions for installing the custom ROM are as follows
Your bootloader must be unlocked
You must have a custom recovery installed
Download the lastest DU
Download the GAPPS ( ARM64/7.1)
Put DU and GAPPS on your phone
Reboot in TWRP
Wipe Data, Cache and Dalvik Cache
Flash ROM and GAPPS, SuperSu if you want
So my question is still which variant should I download?
On aosp rom you can install all gapps you want, maybe is better pico or nano