Just a warm suggestion: Consider including LXDM instead of Lightdm. It's lighter, easy to configure and it's in Debian Sid repos. Also it's very well documented in the Arch Wiki.

https://wiki.archlinux.org/index.php/LXDM

oscar@flux-debi:~$ apt-cache policy lxdm
lxdm:
  Installed: 0.5.1-1
  Candidate: 0.5.1-1
  Version table:
*** 0.5.1-1 0
        500 http://http.debian.net/debian/ unstable/main amd64 Packages
        100 /var/lib/dpkg/status
     0.5.1-1 0
        500 http://packages.siduction.org/extra/ unstable/main amd64 Packages

Just my 2 cents...

I'm a long time sid user and had a stint in Crunchbang (where I met vastone). Ready to give Vsido a break in a bare-metal install...