Given the correct ISO image file you should be able to do a full install inside a VMware virtual machine.
In this case, you should be able to choose which amount of disk space you want to allocate for the VM, too, so it should be doable @Flarp55.
Don't hold me to it but as far as I remember a clean Windows install shouldn't take more than 12-20 GB of space. Apple's guidelines are due to Windows not functioning all that cleanly when your disk partition is near full, so they just want to make sure you can operate the bootcamped Windows installation with some files installed.
You guys should however back the Kickstarter regardless in hope of one of the stretch goals (or future updates) enabling Mac support.