First Trip; Too Much?

[veronica]

Two of my friends and myself are backpacking through Europe for the first time. I've only been abroad once and I don't know if perhaps I'm miscalculating the cost/time, but we ended up with this itinerary:

Arrive to London (5 days)
Brussels (3 days)
Amsterdam (2 or 3 days)
Berlin (4 days)
Prague (3 days)
Vienna (3 days)
Budapest (3 Days)
Bucharest (3 days)
Istanbul (3 days)
Athens (3 days)
Rome (5 days)
Venice (4 days)
Bern (2 or 3 days)
Nice, Monaco or Marseille (3 days)
Barcelona (5 days)
Paris (5 days)
Leave from London

Are we in over our heads?
Are we giving each city enough time?
Is the Eurorail worth it?
I know in eastern europe everything is way cheaper, so we could get good deals inside each city, but will it mount up to a lot?

What do you guys think would be an estimate total for this trip in terms of transportation?


Thanks