How to Completely Wipe for a Clean Install

I want to wipe as much as possible before clean installing a ROM. I've been using this guide.

Basically what I do is format data in TWRP and then:
fastboot erase boot
fastboot erase cache
fastboot erase recovery
fastboot erase system

then:
fastboot flash bootloader
fastboot flash radio
fastboot flash recovery

after that:
reboot into TWRP and flash the ROM's zip

Is this a good method of wiping everything before a clean install?

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