Hey .... currently working on it ...
i test the install on VM before release it ... :-)
its running quite well atm, the only thing is mysql needs to be restarted during "apt-get dist-upgrade" which fails. when i restart mysql manually the script goes on ...
Leaving stuff unconfigured while doing dist-upgrade worked for me, but i did a "dpkg --configure -a" afterwards....
give me a few more hours, as said, the script now works not to bad .... testing takes its time here...