HANA Express 2.0 which space to use, SAP, develpment, or new one for SHINE_USER

hi all

i have just installed and going through the setup for my HANA Express 2.0.

i now have an option for my SHINE_USER to assign the SPACE Role, but for which SPACE ? Do I use the SAP, development or do i create a completely new one.

I have a small 16GB laptop, so memory is not abundant.