What I did was:
Format disk
Put high sierra
Create the modified boot camp to enable install from USB
Put the bootcam drivers onto my Win10 USB installer
Reboot into Win10
Go into the console to fix the hybrid MBR
Reboot into Win10 installer and delete partition, then created a smaller one ( I wanted some space for Linux)
Format and install
Install the bootcamp drivers
Whenever the Intel GPU BSOD occurred, fix it as described in the earlier post.
Win10 works.
Installed Linux. Works.
Installed Refind in Linux as boot manager.