Europe July 2012 - Group Travel

I am starting with Vienna where my flight arrives, then to Budapest , Munich, Zurich, Berlin, Amsterdam & finally Vienna again for my return flight

I be using Euro-rail, i am also flexible with the my route if some one wants to join me

this is my rough plan till now:
I will arrive in Vienna by plane 3 july
I am leaving Vienna 6 july

I will arrive in Budapest 6july (by train)
I am leaving 8 july

I will arrive in Munich 8 july (by train)
I am leaving 10 july

I will arrive in Zurich 10 (by train)
I am leaving 12 july

I am planing to visit Berlin & Amsterdam afterwards (by train also)

then i will return to Vienna on 18 july (by train) and take my return flight on 20 july

Europe July 2012