As things cooled a bit, i'm planing to write a plan and to open attendee list so that everyone interested can enter their name.
Is wiki right place for that?
Right now i assume that 30 people would enough to organize such a trip.
Price for transport and food would be 15€ for each person.
Detail plan of visit will be on wiki.
Also, there is option to make smaller group with 15 or 17 people. But i didn't investigate price.
Please, those who are not interested, don't discharge others with pessimistic comments.
This is my personal involvement and everyone else who is interested to help is welcome. I noticed Jasnim, Darjan and i few others that didn't respond on this list are willing to help organize this.