EuroPass? Low cost domestic Flight? Point to Point Ticket?

Hi All,
Currently I'm planning to travel around Europe for few month. Below is my itinerary(all the city below may rearrange), can anyone here suggest type of transport which is safe and convenience?

Amsterdam -> Prague -> Budapest -> Vienna -> Z眉rich -> Salz burg -> Geneva -> Milan -> Venice -> Florence -> Roma -> Athens -> Santorini -> Barcelona -> Paris -> Amsterdam.

Concern on Flight:
1) Delay flight, cancel flight.
Concern on Train:
1) Security issue

EuroPass Vs Point to Point
- Should i buy Euro Global + Czech Republic Or Point to Point? Which 1 cheaper?

Flight Vs Train
- How good the service for Vueling, Air Berlin airline? Will they always cancel flight or delay? or any other airline suggested? (Because i will reserve all my hotel room in advance)

- Is that safe to ride a night train? or which one should avoid?
(Amsterdam - Prague), (Prague - Budapest) (Geneva - Paris), (Paris - Barcelona), (Barcelona - Milan)

I live in Italy and travel frequently. I use the night trains frequently and have never had a problem. I do remember one train in the past year where someone in another compartment said something was missing in the morning. You should lock your compartment door during the night. You can always get a private compartment (at additional expense) if that makes you more comfortable. The night trains I most frequently use are from Venice to Zurich, Geneva and Nice, or Paris; from Verona to Rome or Naples, and from Bologna to Munich, and Barcelona.

You can plan the Italian part of your trip using the Italian train website: http://www.trenitalia.com/en/index.html. The trains are the best option for this part of your itinerary.

There are a lot of budget airlines flying in Europe. The flights are sometimes cheaper than the trains especially where the train trips cross an international border and last longer than 3 hours. I've most often used Transavia and have always had a good experience. Sterling and Air Berlin also both worked out well the times I have used them. You can identify the options between a given city pair here: http://www.whichbudget.com/. There are links to the airline websites to check specific schedules and prices.

You would save a ton of cash taking a train to all these places as inter Europe flights are highly expensive and the trains are fun! ( except the train stations ) You would save even more with the Euro pass and definitely buy one if you make hotel reservations! Go to wikipedia on-line and thare you can see planes are only a Little more safe than jets. Yes, jets sometimes have serious delays and the trains in Europe are most always on time, except for England ( Ironically trains are extremal expensive thare ) The Europeans on the trains are very polite on helping tourist with directions. Yes, the trains are safe at night, just take normal precations. Good luck!