I’d hate to be “that guy”, but you’re way likely to get help by posting in a relevant thread, or better yet - starting your own. That being said, the Zortrax mod team don’t seem to care, so…
Anyway, if you’re a Linux guy, why don’t you try to run the Windows version of Z-Suite via Wine, or whatever Arch guys are using for that purpose? There is a semi - official guide on that: Z-Suite on Linux - a short guide
The Marlin option seems to be for the tinkerers mostly, if you’re not comfortable with bodging a custom firmware, your best bet will be sticking to the official software and firmware…