Please help me with questions about Whonix VDI disk

Hello. I have the following questions. Please help.

  1. Is Whonix Workstation virtual disk image is limited to 100GB? I found that value in VirtualBox Whonix machine settings. It doesn’t suit me. I need more space for Workstation.
  2. What owner:group should be applied to Whonix .vdi disks on host? Should it be a username of your host machine or root? Is it safe that Whonix .vdi disk files have owner:group of host’s machine username?
  3. Wiki says that disk encryption should be applied on host’s physical hard disk drive level not on Whonix virtual disk image level. Does LUKS suit well? Can I use it for full disk encryption on my host machine?

Thank you for answers.

Same as for any other VM.
Nothing Whonix specific.
Self Support First Policy for Whonix applies.

Also unspeific to Whonix, Self Support First Policy for Whonix applies.

I think you can encrypt a virtual disk file with a built-in Virtual Box feature.