Hi
If you look at my install to a specified partition I make no attempt to use an installer. Patrikg method does appear to use installer. If your system allows usb boot up to TC, you can use a busybox version of wget.....that may need ca-certificates, I will test later, or you can use the full wget and not use ca-certicates to download your target image.
it looks like you want to use a fresh SSD for TC so for clean sake, when TC usb stick is in cloud mode, I would suggest we redo gparted to format that drive as fat32 before we put the dirs on it,
move files into the dirs....then create a grub.cfg instead of a 40_custom grub file and in cloud mode,
download grub to install grub into target SSD MBR.
I should with luck be able to give you step by steps this weekend and naturally I will test it.
x86 also known as 32 bit, may be on the way out for most distros but packages build tend to be smaller. Not all upstream coders support it. eg firefox
x86_64 also known as 64 bit. Always larger packages from same source but tends to offer better support upstream.
I do not have the skills of patrikg but have the good looks
EDIT I guess you need x86 for wifi as you have mentioned coreplus?
Is that the reason why you chose x86?
You can use an ethernet cable and choose x86_64 but we just have to download some firmware, some wifi module TCE and maybe some other TCEs