Let me know in case you would be interested in tracks in the Czech and Slovak Republic, I could help out. You could consider:
1)
http://www.autodrom-most.cz/en/informations/race-track/ (quite close to GER boarders)
2)
http://www.automotodrombrno.cz/en/track-data
3)
http://www.slovakiaring.sk/about-the...ng-experience/